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Astronauts Christina Koch and Jessica Meir will exit the International Space Station together on October 18 to replace a faulty battery unit.
SpaceX may want to launch 42,000 internet satellites — about 5 times more spacecraft than humanity has ever flown
Elon Musk wants to cover Earth in high-speed Starlink web access. But crushing SpaceX's competition may require tens of thousands more satellites.
NASA’s Hubble space telescope just took incredible photos of a visiting comet from another star system
NASA also released a time-lapse video of the comet, 2I/Borisov, hurtling past the sun. The images show a halo of dust surrounding the alien object.
NASA isn’t sure what happened to one of its last Apollo moon landers. The truth is probably depressing.
Grumman Aircraft designed and built lunar modules for NASA during the Apollo program. A handful never made it to space, though.
A new radar system will track 250,000 tiny pieces of space junk. It may help prevent snowballing collisions that could cut off our access to orbit.
Tracking tiny bits of debris in space could help us avoid a potential disaster known as a Kessler event.
Private companies like SpaceX and Boeing have started to take the lead in humankind's march into space.
Earth is screaming through space at 1.3 million mph. A simple animation by a former NASA scientist shows what that looks like.
Earth orbits the sun, which orbits the center of the Milky Way galaxy, which is itself barreling through space.
A NASA image shows the center of our galaxy in unprecedented detail. Expect far more revealing photos from a soon-to-launch telescope.
NASA's upcoming James Webb Space Telescope will bring "the highest-quality image ever obtained of the galactic center," one researcher said.
A huge explosion sliced through our galaxy just 3.5 million years ago, as human ancestors walked the Earth. Scientists think it was nuclear activity i...
NASA's Hubble telescope found traces of the explosion in a gas stream beyond the Milky Way, "dramatically" changing scientists' view of our galaxy.
Astronauts just printed meat in space for the first time — and it could change the way we grow food on Earth
A spacecraft with vials of cow cells landed at the International Space Station in September. From there, cosmonauts fed the vials into a 3D printer.