Our world is full of chemicals that shouldn't exist. New research could explain why they exist anyway.
The Milky Way stretches across the early-morning sky in these glistening views captured by astrophotographer Sérgio Conceição in Campinho, Portugal.
Thanks to the Apollo missions, scientists have their hands on hundreds of pounds of lunar rock right here on Earth. But because of a twist of fate, it isn't quite enough to solve a major puzzle.
The small-satellite launch company Rocket Lab called off the planned flight of an experimental satellite for the U.S. military Sunday (March 24) due to a video transmitter issue.
Rocket Lab is counting down to its first flight of 2019, an experimental satellite for the U.S. military, and you can watch it live online today (March 24).
A Rocket Lab Electron booster will launch the military R3D2 space antenna prototype satellite today, March 24, from New Zealand.
On March 25, 1655, Saturn's moon Titan was discovered by the Dutch scientist Christiaan Huygens. See how it happened in our On This Day in Space Video Series.
Neutrinos are the changelings of the subatomic world, but physicists are getting closer to pinning down the particles' true identities.
Scientists recently unraveled a physics puzzle that has stymied experts since the dawn of quantum mechanics.
NASA science instruments are flying to the moon aboard two international lunar missions, according to agency officials.
The Space Development Agency officially came into existence last week and already is causing a stir.
A supernova explosion flung out a super-dense, whirling stellar core, sending it streaking across space at almost 2.5 million miles per hour with a glowing trail 13 light-years long in its wake.
A few brief hops in the Martian air two years from now could open alien worlds to an entirely new kind of exploration.
NASA's Terra satellite captured striking views of the meteor that exploded over the Bering Sea on Dec. 18, 2018.
Earth just got another dazzling glamour shot, thanks to a satellite that snapped its photo on the March 20 spring equinox.
The International Space Station got a power upgrade today (March 22) as two NASA astronauts took a spacewalk to install new batteries on the station's solar arrays.