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Using NASA’s SPHEREx spacecraft, astronomers have studied a horde of mysterious "failed stars," or brown dwarfs, not-so-stellar loners that wander the darkness of space alone.
The European Space Agency's Copernicus Sentinel-3 satellite mission captured a close-up of West Antarctica from its perch high above Earth.
Known as the giant-impact hypothesis, this proposed event involves a collision between Earth and a hypothetical Mars-sized protoplanet astronomers call Theia.
Japan will launch its audacious MMX sample-return mission to Mars today (Oct. 19), and you can watch the historic action live.
MMX could be the first spacecraft to ever return from orbit around the Red Planet.
The world will miss Margaret Hamilton, the pioneering programmer who helped NASA land Apollo astronauts on the moon. But we will always have her example to inspire us.
On Oct. 18, 1963, a cat went to space! Félicette was a French "catstronaut" who became the first and only feline to fly to space. Here's why it mattered.
A citizen science project is seeking volunteers to comb through NASA telescope data for telltale signs of the galaxy's hidden black holes.
