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Do you weigh more when an elevator goes up or when it comes down?
Your weight doesn't change because of gravity but because the floor pushes back. Physicists explain why elevators briefly make you feel heavier or lighter.
Viruses that evolved on the space station and were sent back to Earth were more effective at killing bacteria
Near-weightless conditions can mutate genes and alter the physical structures of bacteria and phages, disrupting their normal interactions in ways that could help us treat drug-resistant infections.
NASA astronauts back on Earth after unprecedented medical emergency on ISS
The SpaceX Crew-11 Dragon spacecraft splashed down this morning as four astronauts completed an unprecedented medical evacuation of the International Space Station (ISS).
NASA announces unprecedented return of sick ISS astronaut and crew
NASA has announced the early return of Crew-11 from the International Space Station after an unidentified astronaut experienced a medical problem.
Rare 'sunglint' transforms Alabama River into a giant 'golden dragon'
Earth from space A 2023 astronaut photo shows the moment the Alabama River briefly morphed into an undulating golden serpent, similar in shape to a Chinese dragon. This temporary transformation was the result of a rare mirror-like phenomenon known as a "sunglint."
Russia accidentally destroys its only working launch pad as astronauts lift off to ISS
The recent launch of a Soyuz rocket carrying three astronauts to the International Space Station has caused significant damage to Russia's only launch pad capable of sending humans into space.
Human stem cells become more active in space — and that's not a good thing
Stem cells age faster and become functionally exhausted in low Earth orbit, making crewed long-duration space travel even more challenging.
Astronaut snaps giant red 'jellyfish' sprite over North America during upward-shooting lightning event
NASA astronaut Nichole Ayers captured an electrifying image of a giant lightning "sprite" shooting up over Mexico and southern U.S. states. The red "jellyfish" could help researchers learn more about this rare phenomenon.
Astrophotographer snaps 'once-in-a-lifetime' shot of solar flare photobombing the ISS
An astrophotographer has captured an extremely rare and "difficult" photo of a solar flare exploding from the sun at the exact moment the International Space Station passed directly in front of our home star.
'Never been seen before': First images from new ISS solar telescope reveal subtle 'fluctuations' in sun's outer atmosphere
NASA's new "CODEX" telescope has snapped its first photos of the sun's outer atmosphere, revealing previously imperceptible changes that could help scientists better predict potentially dangerous space weather events.
