NASA chooses two companies to develop next-gen spacesuits

NASA’s going to need new suits to accompany astronauts to the Moon for its Artemis I mission, and now we know who’s going to be making them: Axiom Space and Collins Aerospace. The two companies will develop next-generation suits that’ll be used both for spacewalks on the ISS, in addition to Moon exploration. NASA says it has defined the technical and safety standards around the new “xEMU” equipment (Exploration Extravehicular Mobility Unit), but it’s up to these partners to deal with “design, development, qualification, [and] certification” as well as building the necessary support equipment.

According to NASA, the new suits could be ready as soon 2025, following testing in either the ISS or a simulated environment. While the space agency is also gearing up for other new equipment, like lunar landers from SpaceX and more companies, having new suits is among its most important tasks for future missions. Currently, astronauts are still relying on space gear designed around 45 years ago for the Space Shuttle program. In an August 2021 report, NASA noted that its xEMU plans likely won’t hit its original 2024 target, and that it has spent around $420 million developing the new suits.

Check out record flying with NASA’s Mars helicopter. Ingenuity has flown farther and faster than ever before.

NASA has released a new video that their Mars helicopter Ingenuity, filmed during its latest flight, a record flight that took the helicopter a full […]

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James Webb Space Telescope’s first full-color images will be revealed on July 12th

Just over six months after the James Webb Space Telescope launched, we’ll get our first look at full-color images captured by the telescope. The European Space Agency says the imagery and first spectroscopic data will be unveiled on July 12th.

“The release of Webb’s first full-color images will offer a unique moment for us all to stop and marvel at a view humanity has never seen before,” Webb deputy program director Eric Smith said. “These images will be the culmination of decades of dedication, talent, and dreams — but they will also be just the beginning.”

JWST required several months of preparation before starting science work. The process included cooling the telescope to its operating temperature, calibrating instruments and aligning the mirrors. The ESA, NASA, the Canadian Space Agency and the Space Telescope Science Institute (STSci) spent over five years figuring out what Webb should capture first in order to show off what the observatory can do.

NASA has shared some images that JWST captured during the preparation phase, but it’s unclear exactly what the full-color images will look like. “Of course, there are things we are expecting and hoping to see, but with a new telescope and this new high-resolution infrared data, we just won’t know until we see it,” STScI lead science visuals developer Joseph DePasquale said.

After the observatory captures its first images proper, it will start scientific observations. Astronomers will analyze data captured by the JWST’s infrared sensors and publish papers on their findings.

The largest plant in the world is an ancient self-cloning sea grass

Shark Bay, an Australian World Heritage Area, serves as home to various animals that feed on its thriving sea grass. Turns out that sea grass called Poseidon’s ribbon weed, or Posidonia australis, is a single ancient plant that’s been cloning itself for the past 4,500 years. Researchers from The University of Western Australia and Flinders University studied samples of the organism taken from across the bay and generated a DNA fingerprint with 18,000 genetic markers. What they found was that the sea grass stretching across 180 kilometers (112 miles) — the size of Cincinnati, as The New York Times notes — of Shark Bay is just a single plant. 

Senior author Dr. Elizabeth Sinclair said they’re often asked how many plants grow in sea grass meadows. For Shark Bay, lead author and UWA student Jane Edgeloe said: “The answer blew us away — there was just one! That’s it, just one plant has expanded over 180km in Shark Bay, making it the largest known plant on Earth.”

The Posidonia apparently clones itself by producing new shoots growing out of its root system. It doesn’t reproduce sexually, because it’s most likely unable to: The organism has a condition called polyploidy, which means it inherited 100 percent of each parent’s genome instead of just 50 percent from each. Since polyploidy often results in sterility, cloning might be the only way for the Shark Bay Posidonia to proliferate. 

Sinclair said its polyploidy might have also made it more resilient than usual, though. It could have given the organism the “ability to cope with a broad range of conditions, which is a great thing in climate change.” It remains to be seen whether the Shark Bay Posidonia will continue to thrive in the face of modern climate change, but the researchers may find out soon enough. They’ve set up a set of experiments to figure out how it survives in environments with variable conditions that include a wide range of temperatures and salinities, as well as extreme brightness and darkness.

You can read the group’s paper in Proceedings of the Royal Society B.

ダークマターを失った奇妙な銀河、新たに奇妙な観測結果

ハッブル宇宙望遠鏡が撮影した、約7200万光年の彼方にある銀河「DF2」の画像。DF2は、ダークマターがほとんどない奇妙な銀河である。ダークマターは銀河を1つにまとめている目に見えない接着剤のような物質なので、DF2にこれがほとんどないことは天文学者たちを当惑させている。（SCIENCE: NASA, ESA, STSCI, ZILI SHEN …