Space Stories: Oxygen Issues on Europa, the Puzzling Expansion Rate of the Universe, and Mini Moon-Bound Rovers

Posted on by onespaceman2000
Image (Credit): Europa as captured by NASA’s Galileo spacecraft. (NASA/JPL/Ted Stryk)

Here are some recent stories of interest.

—The Columbian: “Europa Might Have Less Oxygen Than Expected“

New research suggests there’s less oxygen on the icy surface of Jupiter’s moon Europa than thought — and that could affect what, if any, life might be lurking in the moon’s underground ocean. Even with little or no oxygen, microbes might still be bustling around in the ocean believed to exist miles beneath Europa’s frozen crust. As for what else, “who knows,” said NASA scientist Kevin Hand, who was not involved in the study published Monday in Nature Astronomy.

—Webbtelescope.org: “NASA’s Webb, Hubble Telescopes Affirm Universe’s Expansion Rate, Puzzle Persists“

The best measurements from Hubble show the universe is now expanding faster than predicted based on observations of how it looked shortly after the big bang. These observations were made by the Planck satellite mapping of the cosmic microwave background radiation – sort of a blueprint for how the universe would evolve structure after it cooled down from the big bang. The simple solution to the dilemma is to say that maybe Hubble observations are wrong due to some creeping inaccuracy in its deep-space yardstick. Then along came the James Webb Space Telescope to crosscheck Hubble’s results. Webb’s sharp infrared views of Cepheids agreed with Hubble data. Webb confirmed that the Hubble telescope’s keen eye was right all along.

—NASA JPL: “NASA’s Network of Small Moon-Bound Rovers Is Ready to Roll“

A trio of small rovers that will explore the Moon in sync with one another are rolling toward launch. Engineers at NASA’s Jet Propulsion Laboratory in Southern California recently finished assembling the robots, then subjected them to a punishing series of tests to ensure they’ll survive their jarring rocket ride into space and their travels in the unforgiving lunar environment. Part of a technology demonstration called CADRE (Cooperative Autonomous Distributed Robotic Exploration), each solar-powered rover is about the size of a carry-on suitcase.

Space Stories: Biomolecules on Mars, a “Dead” Galaxy, and the Most Distant Galaxies

Posted on by onespaceman2000
Image (Credit): Image of Mars captured by the NASA Mars Global Surveyor MOC wide angle cameras. (NASA)

Here are some recent stories of interest.

—Tohoku University: “Biomolecules from Formaldehyde on Ancient Mars“

Organic materials discovered on Mars may have originated from atmospheric formaldehyde, according to new research, marking a step forward in our understanding of the possibility of past life on the Red Planet. Scientists from Tohoku University have investigated whether the early atmospheric conditions on Mars had the potential to foster the formation of biomolecules – organic compounds essential for biological processes. Their findings, published in Scientific Reports, offer intriguing insights into the plausibility of Mars harboring life in its distant past.

—University of Cambridge: “Astronomers Spot Oldest “Dead” Galaxy Yet Observed“

A galaxy that suddenly stopped forming new stars more than 13 billion years ago has been observed by astronomers. Using the James Webb Space Telescope, an international team of astronomers led by the University of Cambridge has spotted a ‘dead’ galaxy when the universe was just 700 million years old, the oldest such galaxy ever observed. This galaxy appears to have lived fast and died young: star formation happened quickly and stopped almost as quickly, which is unexpected for so early in the universe’s evolution. However, it is unclear whether this galaxy’s ‘quenched’ state is temporary or permanent, and what caused it to stop forming new stars.

—Webbtelescope.org: “Webb Unlocks Secrets of One of the Most Distant Galaxies Ever Seen“

Delivering on its promise to transform our understanding of the early universe, the James Webb Space Telescope is probing galaxies near the dawn of time. One of these is the exceptionally luminous galaxy GN-z11, which existed when the universe was just a tiny fraction of its current age. One of the youngest and most distant galaxies ever observed, it is also one of the most enigmatic. Why is it so bright? Webb appears to have found the answer. Scientists using Webb to study GN-z11 have also uncovered some tantalizing evidence for the existence of Population III stars nestled in the outskirts of this remote galaxy. These elusive stars — the first to bring light to the universe — are purely made of hydrogen and helium. No definitive detection of such stars has ever been made, but scientists know they must exist. Now, with Webb, their discovery seems closer than ever before.

Space Stories: DART Damage, India Plans for Orbiting Crew, and SLIM Awakes on the Moon

Posted on by onespaceman2000
Image (Credit): Illustration of how DART’s impact altered the orbit of Dimorphos about Didymos. (https://dart.jhuapl.edu/)

Here are some recent stories of interest.

—NDTV: “NASA’s Mission Not Only Altered Asteroid’s Path, But Its Shape Too, Says New Study“

A recent study suggests NASA’s DART mission, designed to test asteroid deflection methods, may have revealed more than planned. While successfully altering the target asteroid’s trajectory, scientists now believe the impact also significantly changed its shape, hinting at a surprising composition. Previously thought to be a solid rock, Dimorphos, the impacted asteroid, may actually be a loose collection of debris. This conclusion stems from the unexpected level of deformation observed after the collision. Unlike a typical crater, the impact appears to have caused a broader, flatter dent, resembling an M&M candy.

—Reuters: “India Announces Four-member Crew for ‘Gaganyaan’ Space Mission“

India on Tuesday introduced four crew members for its maiden ‘Gaganyaan’ space voyage, as it aims to become the world’s fourth country to send a crewed mission into space just months after a historic landing on the south pole of the moon. Gaganyaan, or “sky craft” in Hindi, is the first mission of its kind for India and will cost about 90.23 billion rupees ($1.1 billion). It involves the launch of a habitable space capsule over the next year to an orbit of 400 km (250 miles) and its return via a landing in the Indian Ocean.

—SpaceNews.com: “Japan’s SLIM Moon Lander Stages Unexpected Revival After Lunar Night“

Japan’s space agency made contact with its SLIM moon lander Sunday, despite the spacecraft not being expected to function after lunar night. Contact with the Smart Lander for Investigating Moon (SLIM) spacecraft was reestablished on Sunday, Feb. 25, the Japan Aerospace Exploration Agency (JAXA) announced via its dedicated SLIM account on X, formerly known as Twitter, early Feb. 26.

Space Stories: Satellite Returns to Earth, Watching the Moon Landing, and Kuiper Belt Surprises

Posted on by onespaceman2000
Image (Credit): Artist’s rendering of the European Space Agency’s (ESA) Earth Remote Sensing satellite. (ESA/dpa/picture alliance)

Here are some recent stories of interest.

—BBC: “Pioneering European ERS-2 Satellite Burns Up Over Pacific“

The two-tonne ERS-2 spacecraft burnt up in the atmosphere over the Pacific. So far, there have been no eyewitness accounts of the mission’s demise or of any debris reaching Earth’s surface. ERS-2 was one of a pair of missions launched by the European Space Agency in the 1990s to study the atmosphere, the land and the oceans in novel ways. The duo monitored floods, measured continental and ocean-surface temperatures, traced the movement of ice fields, and sensed the ground buckle during earthquakes.

—Forbes: “NASA To Live-Stream Spacecraft Odie’s Moon Landing Thursday. Here’s How To Watch“

Houston-based Intuitive Machines is targeting 5:49 p.m. EST on Thursday, February 22, to put its Odysseus lunar lander on the surface of the moon—and it will be streamed live on NASA TV on YouTube. The first U.S. commercial moon lander, Odysseus—also known by its nickname “Odie”—will touchdown near a crater called Malapert A in the south pole region of the moon. If successful, this IM-1 mission—which is taking a scientific payload to the moon—will be the first spacecraft from the U.S. to land on the moon since Apollo 17 in December 1972.

—Science Alert: “NASA’s New Horizons Discovered a Large Surprise in The Kuiper Belt“

There may be a lot more than we thought to the belt of icy debris that circles the outer Solar System. Data from the New Horizons probe as it sails serenely through the Kuiper Belt hints at unexpected levels of particles where dust ought to be thinning out, suggesting the donut-shaped field extends significantly farther from the Sun than previous estimates suggest.

Space Stories: A Test of Space Suits, Water Detected on Asteroids, and China’s Growing Space Program

Posted on by onespaceman2000
Image (Credit): Recent test of the space suit being built by Collins Aerospace. (Collins Aerospace)

Here are some recent stories of interest.

—The Verge: “One of NASA’s New Spacesuits Passes Microgravity Test“

Collins Aerospace, a private company hired to create spacesuits for use outside the International Space Station (ISS), has tested its suit aboard a commercial microgravity flight, passing a milestone that lets engineers move forward toward critical design review…During the test, the plane executed “roller-coaster-like maneuvers” to induce weightlessness and allow someone wearing a prototype to see if it actually lets someone move around in it under those conditions.

—Newsweek: “NASA Data Detects Water on Asteroids for the First Time Ever“

Water has been found on the surface of two asteroids for the first time, scientists said in a new paper. Two silicate-rich asteroids were detected by the retired Stratospheric Observatory for Infrared Astronomy (SOFIA) that were giving off a specific wavelength of light that indicated the presence of molecules of water, according to research published in The Planetary Science Journal. The discovery may have major implications for theories about how water initially made its way to our own planet. It could have been delivered via asteroid impact.

—Astronomy.com: “China is Embarking on a Science and Exploration Program of Staggering Scale“

When China’s first lunar lander, Chang’e 3, touched down in Mare Imbrium on the Moon in 2013, it was the pinnacle of the country’s space endeavors. The robotic lander and its small Yutu rover companion were the first spacecraft to operate on the Moon since the 1970s, and provided new insights into our planet’s natural satellite…Since then, China’s space activities have exploded in range, frequency, and ambition. The country now rivals the U.S. for the most launches per year, with around 80 missions having been planned for 2023. The nation has its own modular space station, named Tiangong, which is expected to be continuously occupied by a rotating crew of three astronauts for at least a decade.