Space
- ktla.com Stadium-sized asteroid buzzes by Earth on Saturday: 5 things to know
Near miss, in this case, is a relative term: Saturday’s asteroid, 2024 MK, will come within 180,000 miles of Earth. On Thursday, meanwhile, asteroid 2011 UL21 flew within 4 million miles.
> An asteroid the size of a football stadium threaded the needle between Earth and the moon Saturday morning — the second of two astronomical near misses in three days. Near miss, in this case, is a relative term: Saturday's asteroid, 2024 MK, came within 180,000 miles of Earth. On Thursday, meanwhile, asteroid 2011 UL21 flew within 4 million miles.
> But the Saturday passage of 2024 MK — which scientists discovered only two weeks ago — coincides with a sobering reminder of threats from space. Sunday is Asteroid Day, the anniversary of the 1908 explosion of a rock from space above a Russian town — the sort of danger that, astronomers warn, is always lurking as the Earth hurtles through space... In 2013, for instance, an asteroid about 62 feet across that broke apart nearly 20 miles above Siberia released 30 times as much energy as the atomic bomb that hit Hiroshima. While most of the impact energy was absorbed by the atmosphere, the detonation triggered a shock wave that blew out windows and injured more than a thousand people.
The article points out that if Saturday's asteroid had hit earth, the impact would have "the equivalent impact energy in the hundreds of megaton approaching a gigaton," Peter Brown of Canada's Western University told the Canadian Broadcasting Service. (For comparison, most hydrogen bombs are in the 50-megaton range.) Brown said "It's the sort of thing that if it hit the east coast of the U.S., you would have catastrophic effects over most of the eastern seaboard. But it's not big enough to affect the whole world."
Meanwhile, the article adds that last Thursday's asteroid — "while it was comfortably far out in space" — was the size of Mt. Everest. "At 1.5 miles in diameter, that asteroid was about a quarter the size of the asteroid that struck the earth 65 million years ago, wiping out all dinosaurs that walked, as well as the majority of life on earth." But the risk of a collision like that "is very, very low." NASA has estimated that a civilization-ending event (like the collision of an asteroid the size of Thursday's with the Earth) should only happen every few million years. And such an impact from an asteroid half a mile in diameter or bigger will be almost impossible for a very long time, according to findings published last year in The Astronomical Journal.
NASA's catalog of large and dangerous objects like 2011 UL21 is now 95 percent complete, MIT Technology Review reported.
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Tianlong 3 booster static fire test lifts off instead
Scott Manley video, looks like the hold down claps may have ripped the bottom off the booster, allowing it to take off.
- futurism.com There's an Extremely Stupid Reason NASA Scientists Can't Study China's Amazing New Moon Rocks
The US enacted a law in 2011 that forbids NASA from cooperating with China, which means it may not be able to study the latest Moon rocks.
cross-posted from: https://lemmy.ml/post/17489886
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Webb finds never-before-seen structures above Jupiter's Great Red Spot
www.nasaspaceflight.com Webb finds never-before-seen structures above Jupiter's Great Red Spot - NASASpaceFlight.comUsing the joint NASA, European Space Agency (ESA), and Canadian Space Agency (CSA) James Webb…
- phys.org Tiny bright objects discovered at dawn of universe baffle scientists
A recent discovery by NASA's James Webb Space Telescope (JWST) confirmed that luminous, very red objects previously detected in the early universe upend conventional thinking about the origins and evolution of galaxies and their supermassive black holes.
- gizmodo.com Wild Theory Suggests Dark Matter Could Make Stars Immortal
We take it for granted that all stars eventually die, but a quirk involving dark matter suggests those near the galactic core may last forever.
- mashable.com Aliens haven't contacted us. Scientists found a compelling reason why.
"It's like winning the lottery."
tectonic planet are rare
- arstechnica.com NASA orders more tests on Starliner, but says crew isn’t stranded in space
“I want to make it very clear that Butch and Suni are not stranded in space."
NASA and Boeing officials pushed back Friday on headlines that the commercial Starliner crew capsule is stranded at the International Space Station but said they need more time to analyze data before formally clearing the spacecraft for undocking and reentry.
- www.nasa.gov Surprising Phosphate Finding in NASA’s OSIRIS-REx Asteroid Sample - NASA
Scientists have eagerly awaited the opportunity to dig into the 4.3-ounce (121.6-gram) pristine asteroid Bennu sample collected by NASA’s OSIRIS-REx (Origins,
- www.scientificamerican.com JWST Detects the Earliest, Most Distant Galaxy in the Known Universe—And It’s Super Weird
NASA’s James Webb Space Telescope observed an unusually large and highly luminous galaxy at a record-breaking 290 million years after the big bang
Summ:
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The James Webb Space Telescope (JWST) has discovered the most distant galaxy ever confirmed, named JADES-GS-z14-0, which appears as it existed just 290 million years after the Big Bang.
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The discovery of this surprisingly luminous and massive early galaxy challenges theories about how galaxies formed in the cosmic dawn
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JWST has been repeatedly breaking its own records for the most distant galaxies since beginning operations in 2022
more about:
https://www.bbc.com/news/articles/cjeenyw8rd2o
https://webbtelescope.org/contents/early-highlights/nasas-james-webb-space-telescope-finds-most-distant-known-galaxy
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- www.space.com NASA selects SpaceX to build deorbit vehicle for International Space Station
The contract is worth up to $843 million, not including launch costs.
- www.flyingmag.com Blue Origin Urges FAA to Cap SpaceX Launches at Kennedy
The company filed a public comment requesting that the regulator limit launches of competitor SpaceX’s Starship rocket.
- apnews.com China calls on scientists of all nations to study lunar samples, but notes obstacle with the US
China’s space officials said Thursday they welcomed scientists from across the world to apply to study the lunar rock samples the Chang’e 6 probe brought back to Earth in a historic mission, but noted there were limits to that cooperation, specifically with the U.S.
- www.jpl.nasa.gov NASA’s Juno Gets a Close-Up Look at Lava Lakes on Jupiter’s Moon Io
Infrared imagery from the solar-powered spacecraft heats up the discussion on the inner workings of Jupiter’s hottest moon.
- www.planetary.org What would it be like to stand on the surface of Titan?
If you could visit Titan, you'd be in for a very alien experience.
- www.bbc.co.uk Chang'e-6: China's space probe returns with rare Moon rocks
The Chang'e-6 has landed after collecting the first ever samples from the far side of the Moon.
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What space object do you find the most interesting?
Personally, I find Brown Dwarfs to be absolutely fascinating. An object that isn't quite a planet and isn't quite a star, but something in between.
What would one even look like? Would it look like a gas giant that's glowing red, along with swirls of gas in its atmosphere like Jupiter? Or would it resemble a star and have a fiery surface like the sun? I prefer to imagine them as glowing gas giants but I don't know how realistic that is.
Gas giants in general are fascinating to me as well, I really hope we send a probe into one of the gas giants with a camera before I die. I'd absolutely love to see what it looks like inside a gas giants atmosphere before the probe gets crushed by the increasing pressure as it descends.
- phys.org China, France launch satellite to better understand the universe
A French-Chinese satellite blasted off Saturday on a hunt for the mightiest explosions in the universe, in a notable example of cooperation between a Western power and the Asian giant.
- gizmodo.com Scientists Propose New Way to Find Aliens: Detect Their Failing Warp Drives
If an extraterrestrial warp drive collapses, we might be able to sense the resulting gravitational waves from Earth.
- www.livescience.com Astronauts stranded in space due to multiple issues with Boeing's Starliner — and the window for a return flight is closing
NASA and Boeing engineers are troubleshooting various faults in the Starliner spacecraft. But with only 45 days of docking time available, the window for return is closing.
- www.nasa.gov NASA's Hubble Celebrates 21st Anniversary with "Rose" of Galaxies - NASA
To celebrate the 21st anniversary of the Hubble Space Telescope's deployment into space, astronomers at the Space Telescope Science Institute in Baltimore,
- science.nasa.gov NASA Releases Hubble Image Taken in New Pointing Mode - NASA Science
NASA’s Hubble Space Telescope has taken its first new images since changing to an alternate operating mode that uses one gyro. The spacecraft returned to science operations June 14 after being offline for several weeks due to an issue with one of its gyroscopes (gyros), which help control and orient...
- www.theguardian.com Astronomers detect sudden awakening of black hole 1m times mass of sun
Mysterious brightening of distant galaxy believed to be caused by material falling into huge black hole
- www.inverse.com A Weird Final Test for Boeing’s Starliner Uncovered the Likely Cause of Several Recently-Failed Thrusters
The Starliner's failed thrusters were put to the test on Saturday.
- www.the-scientist.com Searching for Life’s Simple Necessities Across the Asteroid Belt
NASA’s Europa Clipper mission will explore the characteristics of Jupiter’s moon Europa. Its data will help scientists assess if the icy body has the potential to host life.
- www.yahoo.com Human missions to Mars in doubt after astronaut kidney shrinkage revealed
‘An astronaut could make it to Mars but they might need dialysis on the way back,’ scientist warns
- spacenews.com ESA-China moon cooperation could end with Chang’e-6
ESA-China moon cooperation could end with Chang’e-6 European-Chinese cooperation in lunar exploration could come to an end despite successful collaboration in the ongoing Chang’e-6 mission.
- www.space.com 'No emergency situation' on International Space Station, NASA says after astronaut medical drill audio causes stir
Audio from a simulation of an astronaut medical emergency was accidentally broadcasts on NASA's official ISS livestream channels.
- www.ucl.ac.uk Would astronauts’ kidneys survive a roundtrip to Mars?
The structure and function of the kidneys is altered by space flight, with galactic radiation causing permanent damage that would jeopardise any mission to Mars, according to a new study led by researchers from UCL.
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‘Once-in-a-lifetime’ explosion will bring a new star to the night sky
edition.cnn.com ‘Once-in-a-lifetime’ explosion will bring a new star to the night sky | CNNAstronomers are anticipating the appearance of a “new star” triggered by an explosive event that could appear in the night sky anytime between now and September.
- abcnews.go.com Boeing's Starliner has 5 'small' helium leaks as astronauts' ISS mission is extended: NASA
Boeing said its Starliner spacecraft is experiencing five "small" helium leaks as the crew's mission aboard the ISS was extended to June 18.
- www.planetary.org What DART has taught us so far
NASA's DART mission showed that if we detect a dangerous asteroid headed toward Earth, knocking it off course with a spacecraft is a potential option.
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Do you believe in other life forms?
I believe in other life forms, I’m just not sure when they will arrive here on earth. I just have one dream before I die, and that’s to see an alemow (alien).
- www.space.com 'We thought it was impossible:' Water frost on Mars discovered near Red Planet's equator
"Its existence here is exciting, and hints that there are exceptional processes at play that are allowing frost to form."
- arstechnica.com NASA is commissioning 10 studies on Mars Sample Return—most are commercial
SpaceX will show NASA how Starship could one day return rock samples from Mars.
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Starliner tour while docked to ISS
www.youtube.com NASA’s Boeing Crew Flight Test Starliner TourLive from the International Space Station: Watch a tour of the Boeing Starliner with NASA astronauts Butch Wilmore and Suni Williams, the first crew to fly o...
Interesting part starts at 3min 42sec
Piped link: https://piped.video/watch?v=hnRdIMklPow&t=222
- futurism.com Chinese Lander Instrument Detects Negative Ions on Far Side of Moon
An ESA scientific instrument dropped off by China's lunar lander detected negative ions on the far side of the Moon.
cross-posted from: https://lemmy.ml/post/16605534
> Chinese Lander Instrument Detects Negative Ions on Far Side of Moon
