Space Stories: A New Martian Crater, the Final Piece of China’s Space Station, and the Falcon Heavy Flies Again

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Image (Credit): Recent impact crater on the surface of Mars. It was formed on December 24, 2011 in the Amazonis Planitia region. (NASA/JPL-Caltech/University of Arizona)

Here are some recent stories of interest.

—NASA: “NASA’s InSight Lander Detects Stunning Meteoroid Impact on Mars“

NASA’s InSight lander recorded a magnitude 4 marsquake last Dec. 24, but scientists learned only later the cause of that quake: a meteoroid strike estimated to be one of the biggest seen on Mars since NASA began exploring the cosmos. What’s more, the meteoroid excavated boulder-size chunks of ice buried closer to the Martian equator than ever found before – a discovery with implications for NASA’s future plans to send astronauts to the Red Planet.

—Aljazeera: “Final Module Docks at China’s ‘Heavenly Palace’ Space Station“

The final module required for the completion of China’s Tiangong space station has successfully docked with the core structure, state media say, a key step in Beijing’s ambitious plans for space exploration…The module – named Mengtian, which means “heavenly dream” – was launched on Monday on a Long March 5B rocket from the Wenchang launch centre on China’s tropical island of Hainan, CCTV reported.

—Wall Street Journal: “SpaceX’s Falcon Heavy Rocket, World’s Most Powerful Rocket, Launches After Three-year Hiatus“

SpaceX’s Falcon Heavy — a towering, three-pronged vehicle that is the most powerful operational rocket in the world — returned to the skies on Tuesday for the first time since mid-2019. The rocket launched at 9:41 a.m. ET from NASA’s Kennedy Space Center in Florida, hauling satellites to space for the US military in a secretive mission dubbed USSF-44.

Has Russia Lost its Space Mojo?

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Image (Credit): Russia’s Progress 76 resupply ship approaching the ISS in July 2020. (NASA)

Marina Koren’s article in The Atlantic, titled “The Russian Space Program Is Falling Back to Earth,” has plenty to say about the state of Russia’s space program. Her assessment is pretty bleak outside of the continued collaboration related to the International Space Station (ISS).

She notes:

Beyond the ISS, though, Russia’s space portfolio isn’t all that grandiose these days. Although cosmonauts fly into orbit regularly, Russia does not have a rover on the far side of the moon, as China has, or orbiters around Mars, as India and the United Arab Emirates have. It does not have a fleet of space telescopes like the U.S has. The Soviet Union was the first to send a human being to space, decades ago, and its early accomplishments are a distinct point of national pride. But the Russian space program has stalled for years, plagued by sparse budgets. And that was before Vladimir Putin’s onslaught on Ukraine: Some of the space plans the country still had in the works are falling apart. Now the Russian space effort may be more adrift than ever.

The Russian invasion of Ukraine may be the last straw. It led to the cancellation of various collaborative space projects with other nations. For instance, back in March the European Space Agency (ESA) was forced to suspend its joint ESA/Roscosmos ExoMars Rover mission to Mars.

China seems to be pulling ahead of Russia in the space race, with Russia taking a back seat on future projects, such as a Moon base or new space station. On the ground, Russia has shown it is not up to a war with Ukraine, making its role as a military power questionable. The article notes that Russia’s status as a space power is now also in question.

And shooting down another nation’s satellites will not be seen as a sign of strength in either the military or space arena.

Space Stories: Approaching Lucy, Chinese Space Ambitions, and Conan the Bacterium

Posted on by onespaceman2000
Image (Credit): Image from NASA’s Lucy spacecraft showing the Earth and Moon from 890,000 miles away (look closely – the moon on the left is a very pale dot). (NASA/Goddard/SwRI)

Here are some recent stories of interest.

—NASA.gov: “NASA’s Lucy Spacecraft Captures Images of Earth, Moon Ahead of Gravity Assist“

On October 13, 2022, NASA’s Lucy spacecraft captured [the above] image of the Earth and the Moon from a distance of 890,000 miles (1.4 million km). The image was taken as part of an instrument calibration sequence as the spacecraft approached Earth for its first of three Earth gravity assists. These Earth flybys provide Lucy with the speed required to reach the Trojan asteroids — small bodies that orbit the Sun at the same distance as Jupiter. On its 12 year journey, Lucy will fly by a record breaking number of asteroids and survey their diversity, looking for clues to better understand the formation of the solar system.

—SpaceNews.com: “China Considering Mission to Ceres and Large Dark Matter Space Telescope“

The Chinese Academy of Sciences is considering potential missions including a Ceres orbiter and a huge telescope to hunt for clues about the nature of dark matter. More than 20 candidates are vying for funding for further study under the Chinese Academy of Sciences Strategic Priority Program on Space Science, also known as the New Horizon Program, and are currently undergoing evaluation.

—Space.com: “Extremophiles on Mars Could Survive for Hundreds of Millions of Years“

One of Earth’s toughest microbes could survive on Mars, lying dormant beneath the surface, for 280 million years, new research has shown. The findings increase the probability that microbial life could still exist on the Red Planet. Deinococcus radiodurans, nicknamed “Conan the Bacterium,” is one of the world’s toughest microbes, capable of surviving in radiation strong enough to kill any other known life-form. Experiments have now shown that if Conan the Bacterium or a similar microbe existed on Mars, it could survive 33 feet (10 meters) beneath the surface, frozen and dried out, for 280 million years.

The National Air and Space Museum is Open for Business

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Image (Credit): The “Destination Moon” exibition at the refurbished National Air and Space Museum. (Smithsonian Museum)

If you have been awaiting the refurbishing of the Smithsonian’s National Air and Space Museum, then you will be happy to know that the museum reopened on October 14th. Only now you cannot simply stroll into the museum. Instead, you need to obtain a free timed-entry pass. Unfortunately, this seems to be the current system used by numerous museums to control traffic as well as capture all of your personal information so they can swamp you with junk mail and offers. Anyway…

Here are the a few of the new exhibits the museum is highlighting (go here for the full list):

  1. “Walking On Other Worlds”: Experience what it’s like in distant parts of our solar system in the “Walking on Other Worlds” interactive experience in the Kenneth C. Griffin Exploring the Planets Gallery. This immersive media exhibit presents visitors with a seven-minute “tour” of seven different worlds: Venus, Earth’s Moon, Mars, Jupiter, Saturn’s moon Titan, asteroid Ryugu, and comet 67P.
  2. Science Fiction Artifacts: New to display is a full-sized T-70 X-wing Starfighter “flown” by Poe Dameron (Oscar Isaac) in Star Wars: The Rise of Skywalker (2019). The screen-used vehicle is on long-term loan from Lucasfilm and is displayed hanging outside the planetarium. Star Trek is also represented in the new exhibitions. 
  3. ISS Cupola: In the One World Connected gallery, put yourself in the shoes of astronauts on the International Space Station (ISS) with the ISS Cupola interactive. Every 90 minutes, astronauts on board the ISS can see the Sun rise from the station’s Cupola, a European Space Agency-built observatory module. 

Given that NASA’s Artemis 1 mission is shooting for the Moon again, the timing is perfect. Of course, in December 2022 it will have been 50 years since the last human walk on the Moon’s surface, so we have a lot to celebrate as well as a lot of time to make up. Let’s hope a future update to the National Air and Space Museum includes models of spacecraft used to get humans to Mars.

And remember, you can also visit the Steven F. Udvar-Hazy Center outside the Washington Beltway that contains large planes, jets, and spacecraft that cannot fit in the DC museum, including the Space Shuttle Discovery. Last time I went there I could walk right in without using a timed-entry pass.

Image (Credit): Space Shuttle Discovery at the Steven F. Udvar-Hazy Center. (Smithsonian Museum)

Study Findings: Early Mars Habitability and Global Cooling by H2-based Methanogens

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Image (Credit): Image of present day Mars. (NASA)

Nature Astronomy abstract:

During the Noachian, Mars’ crust may have provided a favourable environment for microbial life. The porous brine-saturated regolith would have created a physical space sheltered from ultraviolet and cosmic radiation and provided a solvent, whereas the below-ground temperature and diffusion of a dense, reduced atmosphere may have supported simple microbial organisms that consumed H2 and CO2 as energy and carbon sources and produced methane as a waste. On Earth, hydrogenotrophic methanogenesis was among the earliest metabolisms, but its viability on early Mars has never been quantitatively evaluated. Here we present a probabilistic assessment of Mars’ Noachian habitability to H2-based methanogens and quantify their biological feedback on Mars’ atmosphere and climate. We find that subsurface habitability was very likely, and limited mainly by the extent of surface ice coverage. Biomass productivity could have been as high as in the early Earth’s ocean. However, the predicted atmospheric composition shift caused by methanogenesis would have triggered a global cooling event, ending potential early warm conditions, compromising surface habitability and forcing the biosphere deep into the Martian crust. Spatial projections of our predictions point to lowland sites at low-to-medium latitudes as good candidates to uncover traces of this early life at or near the surface.

Citation: Sauterey, B., Charnay, B., Affholder, A. et al. Early Mars habitability and global cooling by H2-based methanogens. Nat Astron (2022). https://doi.org/10.1038/s41550-022-01786-w

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