In the early years of the United States, when the nascent US Navy was still getting its sea legs, several presidents used privateers to capture or destroy enemy warships when armed naval vessels were unable to do so.
President John Adams was one of the most vigorous proponents of commissioning private vessels for national ends. His administration issued letters of marque and reprisal during the so-called "Quasi-War" with France in the final years of the 18th century. These letters created the legal distinction between privateering and piracy.
One of the letters signed by Adams, dated November 1799, authorized the use of a merchant ship to "subdue, seize, and take any armed French vessel" found near US coastal waters of "elsewhere on the high seas." France also routinely used privateers against US shipping at the time.
When NASA’s Nancy Grace Roman Space Telescope launches, as early as the end of next month, it will attempt one of astronomy’s most precise disappearing acts to date. The telescope will carry the first space-bound “active” coronagraph, an instrument that effectively erases most of the light from a star during photography.
It will allow astronomers to take the first pictures of planets orbiting other stars that are similar to those in our solar system. Ultimately, it could pave the way for a future mission that could snap the first photos of Earth-like worlds.
“I hope it’s remembered for it being that critical stepping stone for … finding Earth 2.0,” says Brandon Creager, the instrument’s lead mechanical engineer at NASA’s Jet Propulsion Laboratory (JPL).
Named after Nancy Grace Roman, NASA’s first chief of astronomy, this new telescope will carry a roughly 300-megapixel wide-field camera that will enable it to capture images about 100 times larger than the Hubble Space Telescope’s widest exposures at a similar resolution.
These capabilities will help astronomers unpack the mysterious identities of dark matter and dark energy—and to detect around 100,000 new exoplanets, planets outside our solar system, whose presence can be inferred from the way they distort the starlight of more distant stars. Javier Viaña, a research scientist at Harvard who has had two projects selected for Roman’s highly competitive first year of observing, compares the leap to moving from “interviewing a handful of people” to “conducting a global census.”
Another camera will use the coronagraph, blocking out a star’s light as it observes one stellar system at a time. The instrument will allow astronomers an unprecedented look at the space around stars, enabling them to see smaller, dimmer, and more close-in exoplanets. “It’s giving us the ability to see planets that we haven’t been able to physically see before,” says Creager.
The anatomy of a vanishing trick
Coronagraphs in space aren’t new. But earlier incarnations, such as those currently aboard Hubble and the James Webb Space Telescope, use a stationary system to block a star’s blinding light. The approach does help, but it’s a bit like putting your thumb over a flashlight while searching a dark room for a firefly. Though the bulb vanishes, stray glare can still escape and overwhelm the light of the insect. Inside a telescope, that glare can come from light leaking around the edges of machinery or from minuscule imperfections in mirrors and coatings that can scatter starlight into speckles. All this can hide, or even impersonate, a planet.
Roman’s coronagraph, however, will attempt something completely unseen in space telescopes until this year: Before each observation, it will measure that leftover light and try to suppress it, a technique known as active wavefront control.
The telescope is able to do this because it contains two deformable mirrors. Each has a 48-by-48 checkerboard of actuators (tiny pistons) beneath a thin, deformable sheet of glass. Applying a small amount of voltage makes the actuators contract and tug their patches of mirror slightly backward, like thousands of microscopic fingers delicately sculpting a surface.
The effect is very subtle: Each patch of mirror can deform by up to 0.5 micrometers, or about one-fourth the size of an E. coli bacterium, and in increments as small as approximately 10 picometers. That’s about a tenth the diameter of a hydrogen atom, says Ilya Poberezhskiy, the instrument’s project systems engineer at JPL.
The actuators allow the mirrors to create an “active wavefront,” where each component is moved to the perfect position to cancel out incoming waves of unwanted light—a bit like a pair of noise-canceling headphones, but for light instead of sound. The “canceled-out” light creates a “doughnut-shaped region around the star where we suppress starlight and where we’re hoping to see exoplanets,” says Poberezhskiy.
Compared with current space-based coronagraphs, the system is expected to improve sensitivity to exoplanets against the glare of their host stars by a factor of up to 1,000, revealing planets that would have been far too faint to detect before.
Like Hubble and JWST, Roman also uses masks, patterned plates placed in the path of the light that are designed to block the photons that run into them. One tool in Roman’s mask arsenal is “silicon grass,” a thicket of microscopic spikes on some masks that can be used in certain configurations to absorb photons so they don’t bounce around the telescope and accidentally reach a detector.
Light entering the forest bounces deeper and deeper between the blades and gets trapped instead of reflecting back toward the camera. “Once the light gets into there, it never gets out,” Poberezhskiy says. The mirrors and masks form a succession of gates and hedges to guide as much of the preserved planetary light as possible toward the final detector.
Alien Jupiters
This elaborate setup could open a new chapter in the direct imaging of exoplanets. Nearly all exoplanets photographed so far are oversize youngsters that are nothing like the residents of our solar system: several times the mass of Jupiter, still glowing with the heat left over from their birth, and orbiting tens or hundreds of times farther from their star than the Earth is from the sun. This is because they are relatively easy to see. Their size, warmth, and distance from their parent star makes them shine brightly in infrared light, far away from the worst of the stellar glare.
Roman, however, could directly image a true Jupiter analogue—a planet similar to Jupiter in mass and circling a sunlike star a few times farther out than Earth is from our sun. Unlike the hot Jupiters we can see now, this one would be a much more mature gas giant like ours, primarily reflecting its parent star’s light after billions of years of cooling instead of heavily emitting its own.
Astronomers have been able to infer the existence of such planets from the gravitational wobble they impart to the star. Roman instead will collect starlight reflected from the planet itself. “We’re not looking at the star. We’re not looking at the effect of the planet on the star,” says Meredith MacGregor, a professor of astronomy at Johns Hopkins who has also secured an observing program. “We are actually looking at the planet, and that is super powerful.”
Once this instrument becomes available, it will become the scientists’ turn to do their jobs. “I’m honestly a little terrified about how we’re all going to deal with it, because I think it’s just so much data,” MacGregor says. “I think people will legitimately still be working on Roman data for decades.”
But don’t expect to see a 4K photo of an alien Jupiter in the coming months. Roman will not be able to resolve such a planet into a solid globe—at best, it will likely resemble a smattering of pixels. Still, that will be enough, MacGregor says, as Roman can then use the coronagraph to get information on the various wavelengths of light from the planet, which can tell astronomers about its atmospheric chemistry.
“You’re taking something that’s a point of light and turning it into an actual world,” she says, “because if you know that about its atmosphere, now you know something about the surface of the planet and the possibility of life being on that planet, right? So that’s a big step.”
During its first observations, scientists and engineers will see whether they can hold a star at the very center of the coronagraph’s masks, shape the mirrors, “dig” the dark doughnut (as Poberezhskiy describes it), and then maintain everything as the spacecraft moves through space and actively changes temperature.
The results will inform NASA’s proposed Habitable Worlds Observatory, the daydream of many an exoplanet astronomer, which will in theory be able to separate the light of an Earthlike planet from that of a sunlike star, over 10 billion times brighter.
Creager, who has worked on the instrument since 2018, is proud of the achievement: “Not too many people get to say, ‘I built something and it’s taking a picture of a planet that’s at a star that’s 50 light-years away or 100 light-years away.’” He imagines the moment he and his team will be able to look at the first image as it arrives: “Yes, we did that.” While the planet may show up only as a tiny dot, Roman’s achievement will be the darkness engineered around it.
Two analog astronauts trudge toward the Mars Society’s Mars Desert Research Station in Utah. (Mars Society Photo)
The Mars Society is planning to build a Pacific Northwest research station suitable for simulating missions to the moon or Mars, in partnership with South Seattle College.
The nonprofit space advocacy group announced today that its executive director, James L. Burk, and the college’s president, Monica Brown, have signed a 10-year memorandum of agreement establishing the partnership.
The plan calls for the Mars Society to lease land on the college’s 87-acre West Seattle campus and build the research station, contingent on funding. Both parties will raise funds from aerospace companies and other donors to support construction, with the goal of opening the station at the start of the 2027-2028 academic year.
The agreement provides for the creation of a joint space studies curriculum and certificate program; a student capstone project and internship program tied to industry partners; and a regional workforce pipeline and community engagement effort.
Those two stations were built more than two decades ago to reflect the designs for Mars habitats. They provide opportunities for teams of researchers to test the tools and techniques that future astronauts might use for extraterrestrial exploration. During their missions, the researchers live and work under simulated Mars conditions. For example, they’re required to put on simulated spacesuits every time they venture outside their habitat.
Burk said the Seattle research station will reflect NASA’s growing emphasis on moon exploration as a precursor to crewed Mars missions, as well as South Seattle College’s traditional emphasis on workforce training. “For more than two decades, the Mars Society has operated analog research stations in the Utah desert and the Canadian Arctic that have shaped how humanity will live and work on other worlds. Bringing that capability to an urban community college campus is something new, and it is deliberate,” he said.
“The moon and Mars programs the federal government has now committed to are going to need a workforce we have not trained for in 50 years,” Burk said. “South Seattle College knows how to train people for the industries that actually build things. That approach is exactly what we need for preparing for planetary surface operations on the moon and Mars.”
South Seattle College’s main campus spans 87 acres in West Seattle. (South Seattle College Photo)
The analog research projects would build upon the college’s existing training programs. For example, students learning about electric vehicle maintenance and repair could work on projects involving battery-powered rovers and drones. Students in the college’s culinary arts program could contribute to research into growing vegetables in space environments.
“South Seattle College has a long tradition of meeting our region’s workforce needs in aerospace, applied science, and skilled trades,” Brown said. “This partnership extends that tradition, and this initiative reflects our commitment to exploring bold, future-oriented opportunities that expand access, inspire imagination, and ensure our students are prepared to lead in emerging industries.”
The Mars Society is headquartered in Colorado but has plenty of Pacific Northwest connections. The Seattle chapter was created in 1998, shortly after the national organization was founded. Burk, a former Microsoft project manager, lives and works in North Bend, Wash.
During a 2023 podcast interview, Mars Society President Robert Zubrin — who earned his Ph.D. in nuclear engineering from the University of Washington — said the Pacific Northwest was “perhaps at the top of the list” of potential sites for a Mars Technology Institute. Today’s announcement appears to be consistent with Zubrin’s assessment of the region.
In its news release, the Mars Society noted that the Pacific Northwest “hosts one of the largest concentrations of commercial space activity in the United States.” The society specifically cited Jeff Bezos’ Blue Origin space venture, SpaceX’s Starlink satellite factory and L3Harris Technologies’ Aerojet Rocketdyne facility in Redmond.
To raise public awareness of the Seattle project, the Mars Society said it plans to install an inflatable mockup of a research habitat in South Seattle College’s Aviation Maintenance Technology facilities this summer. The society also hinted at more to come, saying that there’s “a public event in the works.”
Mechanical engineer Sam Heyd, Chief Technology Officer Gary Lai and chemical engineer Brenden Pelkie operate the Cold Capture system in Interlune’s Cryogenic Lab at the company’s Seattle headquarters. (Interlune Photo)
Seattle-based Interlune says it has managed to produce 99% pure helium-3 from a standard supply of industrial-grade helium, marking a milestone for a technology that the company aims to use on the moon.
The process, known as Cold Capture, could be profitably used on Earth even before Interlune begins lunar mining operations.
Because of its rarity and utility, the price of helium-3 can range as high as $20 million per kilogram ($9 million per pound). Interlune is betting on the proposition that helium-3 is more abundant and easier to access on the moon, due to the lunar surface’s exposure to the solar wind. If Interlune’s business model works out, the company will be able to turn a profit by delivering lunar helium-3 to Earth for industrial applications.
Interlune’s first objective was to show that Cold Capture could work as advertised. The process uses cryogenic distillation to separate helium-3 from ordinary helium at temperatures approaching absolute zero.
“Capturing helium-3 from existing helium sounds deceptively simple,” Gary Lai, Interlune’s chief technology officer, said in a news release. “But helium-3 and ordinary helium are almost chemically identical, making them extraordinarily difficult to separate. Cold Capture exploits subtle physical differences between the two isotopes at cryogenic temperatures to recover helium-3 in a process designed to scale.”
Interlune demonstrated Cold Capture at a small scale in early 2025, and received a $1.25 million small-business grant from the Department of the Air Force last November to scale up the technology for commercial production.
Based on the experiments conducted since then, Interlune projects that its technology could triple the current domestic production rate of helium-3.
“Every liter of helium produced in the world contains trace amounts of helium-3,” said Rob Meyerson, co-founder and CEO of Interlune. “Cold Capture plugs into existing helium liquefaction plant infrastructure to recover that helium-3 and turn it into a valuable product.”
Interlune has already struck deals with the U.S. Department of Energy and Maybell Quantum to deliver shipments of helium-3. The first shipments are likely to come from terrestrial sources of helium, courtesy of Cold Capture.
Meanwhile, the company is following a step-by-step plan for lunar prospecting and production. A camera designed to estimate lunar levels of helium-3 is due for delivery to the moon late this year aboard Astrobotic’s Griffin-1 lander.
That mission, known as Crescent Moon, is expected to open the way for a NASA-supported experiment called Prospect Moon in 2028. The experiment will test methods to extract gases such as helium-3 and hydrogen from lunar soil and rocks.
Follow-up missions could focus on harvesting hydrogen for rocket fuel and other lunar power applications, while also collecting helium-3 for delivery to Earth.
An interactive map displays the sites of wildfires, earthquakes and severe weather events, with links to satellite imagery. (Credit: TerraByte)
Two months after emerging from stealth mode, TerraByte AI is using artificial intelligence and a new partnership to upgrade its “Earth Search Engine.”
The startup, which maintains operations in Seattle as well as San Francisco, has just rolled out a TerraByte News service that pinpoints wildfires, earthquakes and severe weather events on an interactive map. Users can follow links to access news reports, social media posts and satellite views related to selected events.
The satellite views include open-source images from NASA’s Earth observation system as well as Europe’s Sentinel satellites. And now the database also features high-resolution pictures provided through a newly announced partnership with Texas-based SkyFi. The partnership gives TerraByte’s users access to SkyFi’s self-service Earth intelligence platform, which offers satellite and aerial imagery from more than 300 sources at prices as low as $15 per image.
“In May, when we came out of stealth, we made the planet searchable,” TerraByte CEO Rishi Madhok told GeekWire. “Now, the moment you find something, you can hold the imagery in your hands within a day. The next step is making Earth intelligence as routine as a web search — you ask, you see, and then you act.”
Madhok and Fuxun Yu, TerraByte’s chief technology officer, founded the company last year as a follow-up to their work on geospatial data analysis at Microsoft. They developed search tools that can recognize features of interest in satellite images and deliver data-driven insights in response to natural-language queries.
TerraByte’s digest entry for “Forest Fires in France” combines satellite imagery and news reports. (TerraByte Graphic)
Over the past couple of months, TerraByte’s team has grown from three to five employees, Madhok said. “Our goal is to grow the team even further this year, because we are seeing a lot of traction from users since we came out of stealth,” he said.
“A lot of traction is coming from insurance [companies], from the government, from mining, from other areas where there is the possibility to see things,” he said. “And finance, right? A lot of quant firms and hedge funds want to see all of this activity coming in.”
One key application involves emergency response. “Our big focus is on catastrophes, particularly wildfires,” Madhok said. “Our vision is that anybody should be able to track this — not limited to just journalists, but including everyone who is living in those areas and wants to see what’s going on.”
Madhok expects the revenue-sharing partnership with SkyFi to open up new opportunities. “I’m happy to say that we have customers who are paying us,” he said. “From that perspective, we’re already doing well.”
Advances in AI are creating still more opportunities. “Now you can do searches not just using text, but using images, which we call visual search,” he said. “Let’s say you’re searching for a certain kind of vessel, and it’s very hard for you to describe it in natural language. You can just take a screenshot of it, upload it, and within seconds it will literally search for what you were looking for.”
Looking ahead, Madhok and his teammates plan to add people power to the power of AI.
“This is the first version of a platform that we’re going to release, and we obviously want to learn more from our users,” he said. “We want this platform to become crowdsourced, so that people who are local to a region can add more information from that perspective, because then it starts becoming more powerful. We don’t want just TerraByte to be the owner of this.”
Madhok shared a video on LinkedIn that shows how TerraByte’s platform can quickly find high-resolution imagery of a shipwreck in Washington state’s Possession Sound:
SpaceX is preparing another Starship V3 test after last week's automatic launch abort. Here's why the mission matters for Starlink and the company's commercial ambitions.
Although life tends to find a way, something first has to kickstart said lifeforms. Exactly how the first biological cells formed on Earth – and potentially on other worlds – remains an enduring mystery. Some theories point to the early Earth’s surface conditions as a viable laboratory for the self-assembly of the first viable membranes, RNA, DNA and associated molecular machinery, while seeding of the Earth’s primitive atmosphere by sugars and other precursors from asteroids and kin is required in other theories.
Recently [Izaskun Jiménez-Serra] et al. added to this debate with the reported detection of four-carbon sugars in the form of erythrulose in the interstellar medium. Using the 40 meter radio telescope at Yebes and the 30 meter radio telescope at Granada the signatures of this sugar was detected in a molecular cloud near the center of the Milky Way.
These sugars likely form on these interstellar dust grains from more basic two-carbon aldehydes and alcohols, with them providing conceivably a source of energy for early metabolic processes of developing lifeforms. This specific type of sugar is highly prevalent in Earth’s fruits, and thus its prevalence in interstellar space is at the very least an interesting coincidence, if not another puzzle piece in the overarching question of abiogenesis.
It seems as though $5.6 billion wasn't enough. That was the news from the US Space Force on Friday, when military officials announced they were tripling the maximum value of one of the service's National Security Space Launch contracts to $17 billion.
The expansion of the Space Force's National Security Space Launch (NSSL) Phase 3 contract comes as the Pentagon signals rising demand for military satellite launches. The NSSL program is set up to allow Space Systems Command, which oversees the Space Force's launch program, to select from a pool of launch providers for individual missions to deliver the military's satellites to orbit.
The NSSL program has two parts. Lane 1 covers the Space Force's more risk-tolerant missions, such as medium-lift launches with experimental payloads or rideshare missions carrying satellites for the Pentagon's surveillance or data relay constellations. Lane 2 includes higher-priority strategic missions, like the government's largest and most expensive spy satellites, or radiation-hardened communications satellites designed to survive a nuclear war.
It seems as though $5.6 billion wasn't enough. That was the news from the US Space Force on Friday, when military officials announced they were tripling the maximum value of one of the service's National Security Space Launch contracts to $17 billion.
The expansion of the Space Force's National Security Space Launch (NSSL) Phase 3 contract comes as the Pentagon signals rising demand for military satellite launches. The NSSL program is set up to allow Space Systems Command, which oversees the Space Force's launch program, to select from a pool of launch providers for individual missions to deliver the military's satellites to orbit.
The NSSL program has two parts. Lane 1 covers the Space Force's more risk-tolerant missions, such as medium-lift launches with experimental payloads or rideshare missions carrying satellites for the Pentagon's surveillance or data relay constellations. Lane 2 includes higher-priority strategic missions, like the government's largest and most expensive spy satellites, or radiation-hardened communications satellites designed to survive a nuclear war.
Since the first V2 rocket sailed above the Kármán line back in 1944 and right up until the modern era, the trajectory of most space-bound rockets was more or less the same: after expending their propellants they would either crash into some desolate steppe or plunge into the ocean. In either event, the rocket was disposable. The important bit up top might go on to explore the stars or send a human crew off on their mission, but the booster rocket that lifted the spacecraft out of the atmosphere was always going to be sacrificed for the cause.
But in the 1970s NASA had a wild idea: what if we didn’t smash a brand-new rocket valued at millions of dollars into the ocean every time we wanted to put something in orbit? Instead, they would build a hybrid space vehicle that blended the vertical takeoff and raw power of a rocket with the capabilities of an airplane, allowing it and whatever it was carrying to make a gentle runway landing at the end of its mission. As such, the Space Shuttle was born.
With the benefit of hindsight, we now know the Shuttle wasn’t quite the spaceflight revolution that NASA had hoped for. The age of reusable rockets didn’t truly begin until 2015, when SpaceX landed the first stage of their Falcon 9. To date they’ve repeated the feat nearly 600 times, all the while increasing the reliability and speed of their operations. Today the Falcon 9 is the most prolific launch vehicle in history, and nearly every other rocket in active development is being designed to include some element of reusability.
Most recently, China demonstrated that they could recover their Long March 10B rocket by gently bringing it down into what amounts to a giant butterfly net. While it might seem a bit quaint compared to rockets that land on their tails like something out of a 1950s sci-fi movie, the idea offers considerable promise.
There and Back Again
But why did it take 70+ years before we were able to regularly refly orbital-class rockets? It’s not that there’s anything inherently complex about reusing a spent rocket. Sure, there’s a case to be made that material science improvements have made the engines robust enough for repeated use. But even if you had to rebuild the engines after each flight it would still be better than slamming the whole vehicle into the ocean. Similarly, there’s nothing particularly unique about the structure of the Falcon 9 that enables it to fly multiple times — it’s a big metal tube with tanks inside of it, just like essentially every rocket that has flown before it.
The revolutionary technology demonstrated by SpaceX in 2015 didn’t have anything to do with making their rocket go up, it was that they were able to safely bring it back without damaging or physically altering it. The Falcon 9 first stage that came back to Earth was in the same condition it was when it left the launch pad eight minutes or so earlier, albeit with empty propellant tanks and a layer of soot on the outside.
As such, most of the variability we see when comparing the reuse of past, present, and future rockets comes not from how the vehicle ascends, but how it ultimately comes to rest back down on Earth.
Splashdown is Easy, But Rough
Without question, the easiest way to recover a rocket intact is to simply slow it down before it hits the surface of the ocean using parachutes This is how all American crewed capsules, and more applicably the Space Shuttle’s Solid Rocket Boosters (SRBs), have been recovered after their flights.
Once pumped out, the hollow SRBs could be towed to shore.
But even when descending under multiple huge parachutes, splashdown isn’t exactly a gentle event. It could probably best be described as “survivable”, in that the vehicle and crew will come through the experience in one piece, but neither is likely to be terribly happy about it.
The situation of course ends up being even worse for the rocket, as its structure is going to be subjected to the brunt of the impact force. Additionally, a complex aerospace vehicle getting partially submerged in salt water is a recipe for corrosion and electrical issues, to say nothing of the thermal shock the hot engines will experience when getting dunked.
One could argue that the only reason this method of recovery worked for the Shuttle SRBs is because of their relative simplicity when compared to a liquid-fueled rocket capable of independent flight. At the risk of oversimplifying the structure of the SRB, at splashdown it was effectively a hollow tube with minimal avionics and thrust vector control (TVC) hardware that could simply be replaced before the next flight.
Still, the NASA document Solid Rocket Booster (SRB) Refurbishment Practices goes over the considerable work required to bring each booster back to flight status after coming down in the ocean. Given the challenges of refurbishing the boosters, it’s perhaps unsurprising that NASA elected to forgo their reuse on the Space Launch System despite its SRBs being largely identical to their Shuttle predecessors.
Teaching Rockets New Tricks
In the very early days, while they were still trying to reach orbit with the Falcon 1, SpaceX had actually considered a Shuttle SRB-style recovery procedure. But in the end they decided to outfit the Falcon 9 with deployable landing legs and the rest, as they say, is history.
Landing legs allow a rocket to come down on effectively any flat surface, be it a concrete pad next to the launch facility or a floating platform. But there are some fairly serious drawbacks to this approach. For one thing, the requirement for precise terminal guidance means parachutes are out of the question. The rocket needs fins, attitude thrusters, or other control surfaces to come down on the center of the pad.
It also means the rocket needs to perform a propulsive landing. That is, use its own primary engines to bring its velocity on touchdown to as close to zero as possible. This in turn requires engines that can not only restart in flight — a capability that has not traditionally been required by first stage boosters — but are able to throttle down low enough to control the rocket’s descent without simply pushing it back upwards. It’s difficult to overstate how unnatural a state of operation this is for a rocket. Indeed, it’s the antithesis of how nearly every rocket has operated since the Song Dynasty started experimenting with gunpowder in the 10th century.
Even if you can accomplish all that, the true cost of landing a rocket is in the extra mass. Although the legs will be stowed away and unused for 99.8% of the rocket’s flight time, it still has to lug all that weight uphill. If that wasn’t bad enough, there’s also the extra weight of whatever control mechanism is in place to guide the rocket’s descent trajectory as well as the propellant that needs to be kept in reserve for the landing burn.
All told, landing a rocket on legs comes with a massive payload penalty. In the case of the Falcon 9, the rocket’s maximum capacity to Low Earth Orbit (LEO) in its expendable configuration is approximately 22,800 kg (50,300 lb). But when outfitted with the hardware necessary to land, that number is reduced by nearly 25% to 17,500 kg (38,600 lb).
Dropping the Dead Weight
There was a time, not so very long ago, when critics doubted the financial viability of recovering and reusing rockets like the Falcon 9. But today, reuse has gone from theoretical to standard operating procedure. Outside of a few Old Space holdouts, it’s top of mind for every launch provider and critical for remaining competitive in a fast-moving commercial market. In November, Blue Origin even managed to land their New Glenn heavy-lift rocket on only its second flight.
So at this point the question isn’t whether or not future rockets will be reusable, but rather, what is the most efficient way to achieve that reusability?
The first stage of Starship after being caught in mid-air.
With that in mind, it’s easy to see the appeal of China’s net recovery. While the rocket must still perform a propulsive descent — although in theory the necessary positional accuracy, and therefore the technical challenge, is somewhat reduced — it doesn’t need to have landing legs installed. This mass savings increases the vehicle’s useful payload capacity, which in turn makes it more profitable to operate. Achieving the same end goal while being easier and cheaper is an improvement in anyone’s book.
Admittedly, having the rocket come down in a huge net adds a certain amount of whimsy to the whole endeavor, but the overall logic is sound enough. It should also be said that SpaceX, for all the success they’ve had with landing their Falcon 9 on a set of deployable legs, are themselves planning on catching both the first and second stages of their next-generation Starship vehicle. Instead of a net, their goal is to pluck the rocket out of the air with a huge robotic pincer mechanism.
One is reminded of the old joke about how the Americans and Russians approached the problem of writing in space: NASA spent millions of dollars developing a pen that would work in microgravity, while their Russian counterparts simply used pencils. If China can demonstrate the ability to reuse a rocket they snagged in their net, the more elaborate methods of recovery employed by American rockets may one day look like a similarly overengineered solution.
Finding another planet outside of our solar system that can comfortably be called ‘Earth-like’ is one of those discoveries that — if confirmed — would be a major event. The complication here is that with every exoplanet that we discover through observations, determining the type of planet is hard enough, never mind figuring out whether it has an atmosphere, much less what’s in that atmosphere. This makes a recent report on LHS 1140 b rather exciting, as it strongly suggests that this super-Earth may have something close to an Earth-like atmosphere.
In the paper by [Collin Cherubim] and others in Science, the findings of helium occasionally escaping from its atmosphere have led to considerable excitement, as this time-variable atmospheric escape of helium suggests a helium-rich upper atmosphere that’s further depleted in hydrogen.
It should be noted, of course, that these assumptions are based on observations from roughly 49 light-years away, so there’s always some room for later adjustments. Even if confirmed, the star that LHS 1140b orbits is a red dwarf, with a nearly 25-day orbital period and light levels less than half of what Earth receives from the Sun. This would make the surface of LHS 1140b with its proposed oceans rather dim, even if it’s conceivably at temperatures well within the comfort range of us Earth-based mammals.
At 49 light-years distance, it’s also not close enough that — barring an FTL drive — we could do direct observations or visitations, but if these results hold, it’d be on the short list along with a number of other plausibly habitable exoplanets to check out once we build that first warp drive-powered starship.
Indian space officials celebrated the debut flight of Skyroot Aerospace's Vikram-1 rocket, India's first fully commercial satellite launcher, as a "grand success" Saturday after an on-target climb into a 280-mile-high orbit following liftoff from an island spaceport in the Bay of Bengal.
The Vikram-1 lifted off from India's primary spaceport on Sriharikota Island at 1:35 am EDT (06:35 UTC) Saturday, around midday at the launch base along India's southeast coast. The launch was delayed more than a half-hour to resolve a last-minute technical problem. The countdown resumed, culminating in the command to ignite Vikram-1's solid-fueled first stage booster to propel the rocket off the launch pad.
Vikram-1 is modest in size compared to India's larger workhorse rockets. Skyroot's rocket stands about 72 feet (22 meters) tall, with the capability to place payloads of up to 770 pounds (350 kilograms) into low-Earth orbit. This makes Vikram-1 somewhat larger than the Electron launch vehicle developed by Rocket Lab, the world's most successful dedicated small satellite launcher.
"Thanks to the James Webb Space Telescope, astronomers have been given a glimpse of the mechanisms that supermassive black holes use to feed themselves," reports Space.com:
The powerful cosmic titans get really puzzling when astronomers using the JWST spot them before the universe was even 1 billion years old. That's because the mechanisms by which black holes devour matter to grow and then merge to create even more massive black holes should take at least 1 billion years to achieve supermassive status. This is even more confusing because theories also say the most ravenously feeding black holes (and thus the fastest growing) should also push the matter they use for this growth away, in effect putting themselves on a diet. So, with all this in mind, how did supermassive black holes grow so rapidly in the early universe?
One explanation suggests supermassive black holes push away gas, starving themselves as predicted, but also that this matter eventually cools and falls back to the black hole. That would allow for another period of feeding and thus growth. This explanation further suggests that as this gas cools down, it forms "streamers," or filaments, of gas just a few hundred light-years wide but which stretch thousands of light-years long. These would fall back to the center of the galaxy and form a swirling disk around its incumbent black hole, once again feeding it and triggering a new period of growth. This would then restart the jets from the black hole, which would again cut off the cosmic titan's food supply, allowing the whole process to begin once more. The process would in essence be a self-regulating cycle of feasting followed by fasting. However, the connection between these filaments and supermassive black holes has been elusive, meaning this mechanism has resisted confirmation.
To solve the mystery of feasting black holes, the JWST turned its attention to a relatively close AGN situated at the heart of the central galaxy of the Centaurus Cluster, NGC 4696, located just 145 million light-years from Earth. The Hubble Space Telescope previously studied this galaxy, uncovering a strange, hook-shaped swirl of gas near the central supermassive black hole of NGC 4696. The JWST followed up this discovery by producing a detailed map of gas flowing at the heart of the galaxy. This revealed the hook-shaped feature is around 800 light-years wide and is composed of gas moving at incredible speeds of around 1.3 million miles per hour (600 kilometers per second).
More excitingly, the swirl of gas appears to be connected to a vast filament of material falling in toward the central supermassive black hole.
The team tested the JWST observations against a computer simulation, finding gas in the infalling filament scenario would indeed take a shape similar to that seen in NGC 4696.
"JWST is now showing us the final link of this closed loop," team member Helen Russell of the School of Physics and Astronomy at the University of Nottingham in the U.K. said in the statement. "The vast filamentary network of gas flows ultimately funnels gas down to a disk that fuels the black hole."
The team's research was published on Wednesday (July 16) in the Astrophysical Journal Letters.
"We are finally seeing this self-sustaining cycle in action," team leader Julie Hlavacek-Larrondo of the Université de Montréal said in a statement.
Researchers say a meteorite that crashed through the roof of a Hillsborough, New Jersey, home in 2024 contains unusually pristine evidence of salty fluids and organic chemistry from near the surface of a primitive asteroid. "A forensic study of the fragments revealed that they contained preserved bits from near the surface of a primitive asteroid, where it experienced concentrated salty fluids -- a process not previously known from this type of protoplanet world," said lead author and meteor astronomer Peter Jenniskens of the SETI Institute and NASA's Ames Research Center in California's Silicon Valley. Phys.org reports: According to paper co-author Mike Zolensky, a meteoriticist at NASA's Johnson Space Center in Houston, analysis of the Hillsborough meteorite found fragments that were more extensively altered by water on the meteorite's parent asteroid than is typically seen in CM2 carbonaceous chondrites. The analysis classified the specimen as a CM1/2 carbonaceous chondrite, an intermediate classification between petrographic types CM1 and CM2. [...] Zolensky and colleague JangMi Han found small salt-rich CM1 fragments within the Hillsborough meteorite, suggesting they originated from a near-surface region of the parent asteroid where liquid water evaporated and concentrated salts. They are now working to identify the salt minerals for comparison with similar phases found among samples returned to Earth from asteroids Ryugu and Bennu.
The high concentration of salt in briny fluids can potentially create molecules crucial to life on Earth. Brines allow phosphate to remain in solution and can catalyze chemical reactions between organics and precipitate minerals. "Isotope studies of carbon and nitrogen suggest that primitive carbonaceous chondrites, including CM types, delivered organic matter to the early Earth," said cosmochemist Queenie Chan of Royal Holloway University of London, England, and biogeochemist Nana Ogawa of the Biogeochemistry Research Center at the Japan Agency for Marine-Earth Science and Technology. "The Hillsborough meteorite contained 1.8% by weight of carbon and 0.07% of nitrogen, and had carbon and nitrogen isotopes typical for CM-type meteorites."
The meteorite contained a wide variety of soluble organic compounds, and its compositional range confirms that the Hillsborough meteorite was more altered by water than most other CM-type meteorites. "A high fraction of compounds were the product of organic chemistry with minerals," said organic mass spectrometry specialist Phil Schmitt-Kopplin of Technical University Munich. "We do not know if these magnesium organic compounds were contributed by brine chemistry or were simply left over from earlier impact shock processes." In living organisms, organometallic compounds are found in blood and used in photosynthesis. Among the soluble organic compounds were many amino acids, similar to those found in more moderately altered CM2 chondrites.
Astrobiologist Danny Glavin of NASA's Goddard Space Flight Center in Greenbelt, Maryland, and his team in Goddard's Astrobiology Analytical Lab concluded that the delivery of amino acids, carboxylic acids and other soluble organic molecules by CM-type bodies may have contributed to the prebiotic organic inventory that preceded the emergence of life on Earth. Their analysis suggests the complex distribution of amino acids observed in the Hillsborough meteorite formed within the parent body, likely assisted by brine fluid chemistry.
The findings have been published in the journal Science Advances.
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But in the 1970s NASA had a wild idea: what if we didn’t smash a brand-new rocket valued at millions of dollars into the ocean every time we wanted to put something in orbit? Instead, they would build a hybrid space vehicle that blended the vertical takeoff and raw power of a rocket with the capabilities of an airplane, allowing it and whatever it was carrying to make a gentle runway landing at the end of its mission. As such, the Space Shuttle was born.
