Category: mars

Musk said the launches will happen when the next Earth-Mars transfer window opens, which the science blog NextBigFuture identifies as “about November through December 2026.” Musk noted that the 2026 missions “will be uncrewed to test the reliability of landing intact on Mars,” but “If those landings go well, then the first crewed flights to Mars will be in 4 years.”

“Flight rate will grow exponentially from there, with the goal of building a self-sustaining city in about 20 years. Being multiplanetary will vastly increase the probable lifespan of consciousness, as we will no longer have all our eggs, literally and metabolically, on one planet.”

However, they point out, the location of this Martian groundwater is not good news for billionaires with Mars colonization plans who might want to tap into it. “It’s sequestered 10-20km deep in the crust,” explained Prof Manga. “Drilling a hole 10km deep on Mars — even for [Elon] Musk — would be difficult,” he told BBC News.

One of the classic tropes of science fiction is terraforming Mars: warming up our cold neighbor so it could support human civilization. The idea might not be so far-fetched, research published today in Science Advances suggests…

Samaneh Ansari [a Ph.D. student at Northwestern University and lead author on the new study] and her colleagues wanted to test the heat-trapping abilities of a substance Mars holds in abundance: dust. Martian dust is rich in iron and aluminum, which give it its characteristic red hue. But its microscopic size and roughly spherical shape are not conducive to absorbing radiation or reflecting it back to the surface. So the researchers brainstormed a different particle: using the iron and aluminum in the dust to manufacture 9-micrometer-long rods, about twice as big as a speck of martian dust and smaller than commercially available glitter. Ansari designed a simulation to test how these theoretical particles would interact with light. She found “unexpectedly huge effects” in how they absorbed infrared radiation from the surface and how they scattered that radiation back down to Mars — key factors that determine whether an aerosol particle creates a greenhouse effect.

Collaborators at the University of Chicago and the University of Central Florida then fed the particles into computer models of Mars’s climate. They examined the effect of annually injecting 2 million tons of the rods 10 to 100 meters above the surface, where they would be lofted to higher altitudes by turbulent winds and settle out of the atmosphere 10 times more slowly than natural Mars dust. Mars could warm by about 10 degreesC within a matter of months, the team found, despite requiring 5000 times less material than other proposed greenhouse gas schemes…

Still, “Increasing the temperature of the planet is just one of the things that we would need to do in order to live on Mars without any assistance,” says Juan Alday, a postdoctoral planetary science researcher at the Open University not involved with the work. For one, the amount of oxygen in Mars’s atmosphere is only 0.1%, compared with 21% on Earth. The pressure on Mars is also 150 times lower than on Earth, which would cause human blood to boil. And Mars has no ozone layer, which means there is no protection from the Sun’s harmful ultraviolet radiation. What’s more, even once warmed, martian soils may still be too salty or toxic to grow crops. In other words, McInnes says, upping the temperature “isn’t some kind of magic switch” that would make Mars habitable.

That isn’t stopping Ansari and her colleagues from investigating the possibilities.

And you can watch the “welcome home” ceremony’s livestream starting at 5 p.m. EST on NASA TV (also embedded in Engadget’s story). More det ails from NASA:

For more than a year, the crew simulated Mars mission operations, including “Marswalks,” grew and harvested several vegetables to supplement their shelf-stable food, maintained their equipment and habitat, and operated under additional stressors a Mars crew will experience, including communication delays with Earth, resource limitations, and isolation.

One of the mission’s crew members told the Houston Chronicle they were “very excited to go back to ‘Earth,’ but of course there is a bittersweet aspect to it just like any time you reach the completion of something that has dominated one’s life for several years.”

Various crew members left behind their children or long-term partner for this once-in-a-lifetime experience, according to an earlier article, which also notes that NASA is paying the participants $10 per hour “for all waking hours, up to 16 hours per day. That’s as much as $60,480 for the 378-day mission.”

Engadget points out there are already plans for two more one-year “missions” — with the second one expected to begin next spring…

I’m curious. Would any Slashdot readers be willing to spend a year in a mock Mars habitat?

And this week, LiveScience reports, Ingenuity answered back:

On April 16, Ingenuity beamed back its final signal to Earth, which included the remaining data it had stored in its memory bank and information about its final flight. Ingenuity mission scientists gathered in a control room at NASA’s Jet Propulsion Laboratory (JPL) in California to celebrate and analyze the helicopter’s final message, which was received via NASA’s Deep Space Network, made up of ground stations located across the globe.

In addition to the remaining data files, Ingenuity sent the team a goodbye message including the names of all the people who worked on the mission. This special message had been sent to Perseverance the day before and relayed to Ingenuity to send home.

The helicopter, which still has power, will now spend the rest of its days collecting data from its final landing spot in Valinor Hills, named after a location in J.R.R. Tolkien’s “The Lord of the Rings” books.

The chopper will wake up daily to test its equipment, collect a temperature reading and take a single photo of its surroundings. It will continue to do this until it loses power or fills up its remaining memory space, which could take 20 years. Such a long-term dataset could not only benefit future designs for Martian vehicles but also “provide a long-term perspective on Martian weather patterns and dust movement,” researchers wrote in the statement. However, the data will be kept on board the helicopter and not beamed back to Earth, so it must be retrieved by future Martian vehicles or astronauts.

“Whenever humanity revisits Valinor Hills — either with a rover, a new aircraft, or future astronauts — Ingenuity will be waiting with her last gift of data,” Teddy Tzanetos, an Ingenuity scientist at JPL, said in the statement.

Thursday NASA’s Jet Propulsion Laboratory released another new video tracing the entire route of Ingenuity’s expedition over the surface of Mars.

“Ingenuity’s success could pave the way for more extensive aerial exploration of Mars down the road,” adds Spacae.com:
Mission team members are already working on designs for larger, more capable rotorcraft that could collect a variety of science data on the Red Planet, for example. And Mars isn’t the only drone target: In 2028, NASA plans to launch Dragonfly, a $3.3 billion mission to Saturn’s huge moon Titan, which hosts lakes, seas and rivers of liquid hydrocarbons on its frigid surface. The 1,000-pound (450 kg) Dragonfly will hop from spot to spot on Titan, characterizing the moon’s various environments and assessing its habitability.

“Design, cost and scheduling are all significant obstacles, an audit report of NASA’s Mars Sample Return (MSR) Program by the agency’s Office of Inspector General (OIG) finds…”

It involves landing on Mars to collect samples taken by the Perseverance rover and launching those samples to rendezvous with an orbiter, which will haul them to Earth. Perseverance is already on Mars, snagging and storing samples. But the program still needs to build a Sample Retrieval Lander and an Earth Return Orbiter, the latter being developed and funded by the European Space Agency. The Mars Sample Return program is one of the most technically complex, operationally demanding and ambitious robotic science missions ever undertaken by NASA, according to the OIG report.

The report notes design, architecture and schedule issues with the Capture Containment and Return System. These design issues resulted in adding about $200 million to the budget and one year of lost schedule… There is concern that, due to the number and significance of cost increase indicators so far, the $7.4 billion estimate is “premature and may be insufficient,” the report finds. Now, the complexity… could drive costs to between $8 billion to $11 billion, the OIG report notes, citing a September 2023 Independent Review Board report. Notably, a July 2020 estimate listed costs of $2.5 to $3 billion.

These new figures indicate significant financial challenges and uncertainties… Issues include inflation, supply chain problems and increases in funding requests for specific program components.

New research published Friday offers hope that the sediment samples picked up by the Mars rover Perseverance could reveal traces of life — if it ever existed on the Red Planet.

The rover already has confirmed an ancient lake on Mars. The new research published in Science Advances shows the Jezero Crater, where Perseverance verified lake sediments, is theorized to have been filled with water that deposited layers of sediments on the crater floor. “The delta deposits in Jezero Crater contain sedimentary records of potentially habitable conditions on Mars,” the research article’s abstract stated. “NASA’s Perseverance rover is exploring the Jezero western delta with a suite of instruments that include the RIMFAX ground penetrating radar, which provides continuous subsurface images that probe up to 20 meters below the rover.”

The research by UCLA and the University of Oslo shows the lake subsequently shrank and the sediments carried by a river formed a large delta… [R]adar images revealed sediments shaped like lake deposits on Earth. Their existence was confirmed by the new research.

But then they ask if the project is worth the money, with the transportation policy director at the libertarian “Reason Foundation” think tank, Robert W. Poole, arguing instead that NASA “isn’t particularly interested in cost savings, and its decision making is overly driven by politics.”

NASA would have been better off replacing the costly and dated Space Launch System used in the Artemis program. But it didn’t. This probably has a lot to do with the fact that it was largely constructed and engineered in Alabama, the home state of Senate Appropriations Committee Chair Richard Shelby, who has a history of strong-arming NASA to preserve jobs for his constituents.

Long-time Slashdot reader SonicSpike shared the article, which ultimately asks whether it’d be faster and cheaper to just rely on private companies:
In 2009, the private sector saw one of its biggest champions ascend to become the number two person at NASA. Lori Garver pushed to scrap the Constellation program as a way to entice the private sector to fill in the gaps. She also spearheaded the Commercial Crew Program, which continues to employ commercial contractors to ferry astronauts to the International Space Station. Today, companies like Elon Musk’s SpaceX are launching rockets at a faster pace and for a fraction of what NASA spends. In 2022, the company successfully launched 61 rockets, each with a price tag between $100 million and 150 million.

Private companies already design and lease NASA much of its hardware. Poole says there’s no reason NASA can’t take it a step further and just use the SpaceX starship to cover the entire journey from Earth to the moon and eventually to Mars. “If the current NASA plan goes ahead to have the SpaceX Starship actually deliver the astronauts from the lunar outpost orbit to the surface of the moon and bring them back, that would be an even more dramatic refutation of the idea that only NASA should be doing space transportation,” he says.

Poole says that instead of flying its own missions, NASA should play a more limited and supportive role. “The future NASA role that makes the most sense is research and development to advance science,” he says.

But for a contrary opinion, Slashdot reader youn counters that “You can bash NASA all you want but a big reason the private sector is where it is at is because it funded research 12 years ago.” They share a CNET article noting the $6 billion NASA budgeted over five years “to kick-start development of a new commercial manned spaceflight capability.”

And Slashdot reader sg_oneill argues that “Its gonna be a century before we’re really colonizing the moon and/or Mars… because we have a lot of science to do first. How do you do a civilization with zero energy inputs from the rest of humanity? How do we deal with radiation? How do bodies work in low G? (Mars is about 1/3 the gravbity of earth). This needs science, and to get science we need NASA, even if private enterprise is building the rockets.”

“Before it bids farewell, though, the spacecraft still has some surprises in store.”
When Mars rumbled beneath InSight’s feet on December 24, NASA scientists thought it was just another marsquake. The magnitude 4 quake was actually caused by a space rock slamming into the Martian surface a couple thousand miles away. The meteoroid left quite a crater on the red planet, and it revealed glimmering chunks of ice in an entirely unexpected place — near the warm Martian equator.
The chunks of ice — the size of boulders — “were found buried closer to the warm Martian equator than any ice that has ever been detected on the planet,” CNN explained earlier this week. The article also adds that ice below the surface of Mars “could be used for drinking water, rocket propellant and even growing crops and plants by future astronauts. And the fact that the ice was found so near the equator, the warmest region on Mars, might make it an ideal place to land crewed missions to the red planet.”

Interestingly, they note that scientists only realized it was a meteoroid strike (and not an earthquake) when “Before and after photos captured from above by the Mars Reconnaissance Orbiter, which has been circling Mars since 2006, spotted a new crater this past February.” A crater that was 492 feet (150 meters) across and 70 feet (21 meters) deep…

When scientists connected the dots from both missions, they realized it was one of the largest meteoroid strikes on Mars since NASA began studying the red planet…. The journal Science published two new studies describing the impact and its effects on Thursday….

“The image of the impact was unlike any I had seen before, with the massive crater, the exposed ice, and the dramatic blast zone preserved in the Martian dust,” said Liliya Posiolova, orbital science operations lead for the orbiter at Malin Space Science Systems in San Diego, in a statement….

Researchers estimated the meteoroid, the name for a space rock before it hits the ground, was about 16 to 39 feet (5 to 12 meters). While this would have been small enough to burn up in Earth’s atmosphere, the same can’t be said for Mars, which has a thin atmosphere only 1% as dense as Earth’s…. Some of the material blasted out of the crater landed as far as 23 miles (37 kilometers) away.

Teams at NASA also captured sound from the impact, so you can listen to what it sounds like when a space rock hits Mars. The images captured by the orbiter, along with seismic data recorded by InSight, make the impact one of the largest craters in our solar system ever observed as it was created.

Locating ice and minerals has another benefit too, they write in the journal Geophysical Research Letters: to “prepare for human exploration.” And fortunately, there’s a tool on the InSight lander (which touched down in 2018) that can help estimate the velocity of seismic waves inside the geological crust of Mars — velocities which change depending on which rock types are present, and which materials are filling pores within rocks (which could be ice, water, gas, or other mineral cements).

That’s the good news. But after running computer models of applied rock physics thousands and thousands of times, the researchers believe it’s unlikely that there’s any layers saturated with water (or ice) in the top 300 meters (1,000 feet) of the crust of Mars. “Model results confirm that the upper 300 meters of Mars beneath InSight is most likely composed of sediments and fractured basalts.”

The researchers reached a discouraging conclusion, reports Space.com “The chances of finding Martian life appear poor at in the vicinity of NASA’s InSight lander.”
The subsurface around the landing zone — an equatorial site chosen especially for its flat terrain and good marsquake potential — appears loose and porous, with few ice grains in between gaps in the crust, researchers said…. The equatorial region where InSight is working, in theory, should be able to host subsurface water, as conditions are cold enough even there for water to freeze. But the new finding is challenging scientists’ assumptions about possible ice or liquid water beneath the subsurface near InSight, whose job is to probe beneath the surface.

While images from the surface have suggested there might be sedimentary rock and lava flows beneath InSight, researchers’ models have uncertainties about porosity and mineral content. InSight is helping to fill in some of those gaps, and its new data suggests that “uncemented material” largely fills in the region blow the lander. That suggests little water is present, although more data needs to be collected.

It’s unclear how representative the InSight data is of the Martian subsurface in general, but more information may come courtesy of future missions. NASA is considering a Mars Life Explorer that would drill 6 feet (2 meters) below the surface to search for possible habitable conditions. Additionally, a proposed Mars Ice Mapper Mission could search for possible water reservoirs for human missions.

And of course, as the researchers point out in their announcement, “big ice sheets and frozen ground ice remain at the Martian poles.”