A small rock arch in Gale Crater is a whimsical example of the textures of Mars.
In this vast and lonely universe, are Earthlings just desperate for next door neighbors to play with?
A Russian module accidentally pushed the International Space Station out of place. Now, a NASA flight director has revealed that the event was even more serious than initially reported.
A fizzled example of a gamma-ray burst, the most powerful kind of explosion known in the universe, suggests these outbursts can be surprisingly brief, researchers say.
Starting Monday (Aug. 2), you can find Saturn shining in the sky as part of a celestial phenomenon called opposition.
Bright reflections that radar detected beneath the south pole of Mars may not be underground lakes as previously thought but deposits of clay instead, a new study finds.
The company's Electron rocket launched a small satellite for the U.S. military early Thursday morning (July 29), acing its first mission since a failure in mid-May.
Scientists hope to use this new discovery to better understand how space-time warps and bends in the presence of massive objects like black holes.
In the wisp-thin sky of Jupiter's moon Ganymede, the largest satellite in the solar system, astronomers have for the first time detected evidence of water vapor, a new study finds.
A 150-year-old theory about an otherworldly shape proposed by Lord Kelvin, one of history's greatest physicists, has finally been put to the test — and his conjecture is now in doubt.
A German X-ray mission is mapping the distribution of black holes and neutron stars in the Universe, having discovered over two million such new objects in less than two years since its launch.
On Monday (July 26), astronauts said goodbye to a cornerstone of the International Space Station and captured stunning images of the compartment burning up in Earth's atmosphere.
A fireball streaked across North Texas last night, leading to several hundred witness reports of a bright flash and sonic boom.
Scientists believe the ultra-fast object landed in a densely-forested area near the capital, Oslo. It could take up to ten years to find.
A multi-institutional research team will seek evidence of technologies crafted by intelligent alien civilizations — living and extinct.
An asteroid about as long as the Great Pyramid of Giza is tall will make a "close" approach with Earth on Sunday (July 25), according to NASA calculations.