Vast lava tubes pock the surface of the moon and Mars, and could protect explorers from the elements. But first someone needs to explore them.
Researchers are investigating an alien version of water inside the strange, icy interiors of Uranus and Neptune.
Puerto Rico's famous alien-hunting telescope called the Arecibo Observatory took massive damage after a cable snapped in the dead of night.
NASA will discontinue the use of certain nicknames for astronomical objects that are considered to be racist, the space agency said Aug. 5.
SpaceX and United Launch Alliance will share the job of launching the Pentagon's most important military equipment from 2022 to 2026.
Astronomers might detect black holes falling into wormholes via ripples in space-time called gravitational waves, a new study finds.
For a few months in 2018, as NASA's Dawn spacecraft used up its last drops of fuel, it gave scientists an incredibly detailed look at one of the strangest places in the solar system: Occator Crater.
The bubble of charged particles that surrounds our solar system looks more like a deflated croissant than a comet, as traditionally envisioned, a recent study suggests.
Skywatchers beware: The moon will hinder attempts to observe the Perseids, typically one of the year's most spectacular meteor showers.
A team of physicists has devised a simple way to measure the duration of a bizarre phenomenon called quantum tunneling.
President Donald Trump took to Twitter Wednesday (Aug. 5) to announce that he brought NASA back from being "Closed & Dead."
Tens of thousands of planets like Earth and Neptune might orbit the giant black hole at the center of the Milky Way.
Early Mars may not have been quite the warm, wet paradise scientists have hoped for — not if the valleys scarring its surface work the same way as their counterparts here on Earth do.
SpaceX's Demo-2 test flight ended in the Gulf of Mexico today, about two months since its launch opened the era of commercial crewed spaceflight.
NASA's Mars 2020 Perseverance rover entered "safe mode" after a successful launch Thursday (July 30), but should recover, NASA says.
A spacecraft is only as strong as its power source, which is why when NASA was designing its Perseverance Mars rover, the agency turned to radioactive plutonium.