Surprise! New pictures show two symmetrical streaks hiding in the sulfuric acid clouds close to the surface of Venus.
As humans, we rely on water, and that will be no different during long-term space exploration — which is why scientists are investigating how and where water forms elsewhere in the solar system.
Tiny wisps of Earth air stretch way out into deep space, far beyond the moon's orbit, a new study suggests.
We may not have to wait much longer to get our first glimpse of E.T., NASA chief Jim Bridenstine said.
This cluster of stars has been visible for a long time, but scientists only just now realized they're part of the same cosmic river.
The 4-year old MAVEN mission will start making elliptical orbits closer to Mars' surface and prepare for its role as a future data-relay system for NASA's upcoming Mars 2020 rover.
An appropriation bill signed into law Feb. 15 gives NASA $21.5 billion for fiscal year 2019, $1.6 billion above the administration's original request.
The weird "neck" between the lobes of Comet 67P/Churyumov-Gerasimenko spotted by the Rosetta spacecraft formed in part because the comet had a brittle interior, a new study shows.
A colorful high-resolution mosaic of the full moon reveals slight differences in the chemical constitution of the lunar surface.
Meteors, star clusters and a naked-eye comet light up the sky over Portugal in this full-dome fisheye photo captured during the Geminid meteor shower of 2018.
Astronomers think they've found a new clue in their continuing quest to solve one of the most substantial mysteries of the cosmos: where about a third of the universe's matter is hiding.
If liquid water indeed exists under the south polar ice cap of Mars, it has to be due to volcanic activity, a new study suggests.