No, Mars will not be as big as the moon this month. Not now, not ever.
This would be our first trip to Neptune in over 26 years.
Harvard astronomer Avi Loeb is known for his unusual thought experiments regarding alien life; he has suggested a search for...
NASA's spacecraft Cassini has been studying Saturn and its moons since 2004, and its historic mission will finally come to an end in...
Perfect conditions meant there are dozens of stunning photos of last night's Perseids.
Name a planet after Daenerys, Carl Sagan, or HAL 9000.
The meteor shower is happening right now, but will be at its most brilliant on Wednesday night.
"The greatest nation on Earth should not be dependent on others to launch humans into space."
3D space videos? The future is here!
The mysterious side of the satellite is revealed in all its glory.
Curiosity celebrates three trailblazing years on the Red Planet on August 6.
These amazing moons, asteroids and dwarf planets are far smaller than you imagined.
This tiny, tiny spacecraft could find water and other resources on the Moon.
NASA’s Spitzer Space telescope just confirmed that a newly discovered exoplanet is indeed the closest rocky planet to orbit a star...
Last week, some of the greatest minds in science announced the Breakthrough Listen initiative, undoubtedly the greatest attempt yet...
Astronomers have only seen similar surfaces on active planets, like Earth or Mars.
The planet is in its star's habitable zone, and there's a "better than even" chance that it's rocky.
If you haven't heard, Pluto is really, really tiny.
After a long and suspenseful saga, Philae has fallen silent once again. The lander, which touched down on a comet at November 12 of...
NASA's groundbreaking mission revealed carbon monoxide ice in the heart-shaped structure.