Incredible new images of the sun's surface provide an unprecedented view of sunspots and other solar activity.

Discover the best home renovation show for your zodiac sign! From fiery Aries to dreamy Pisces, let astrology guide your next ...

Floated by Carl Sagan in the 1970s, terraforming Mars has been relegated to the pages of science fiction. But could it work?

As NASA and SpaceX pivot toward speeding astronauts to Mars, U.S. scientists are testing technologies that could transform ...

The dark side of the moon may be the most misnamed place in all of the solar system, in fact, by some accounts, the nearside ...

Pioneering astronomical discoveries through high-resolution spectroscopy, cutting-edge instruments and space exploration ...

Meteor showers, eclipses and full moons will appear in California skies this summer. Mark your calendars with these dates, ...

MingChuan Wei, Harbin Institute of Technology, CAMRAS and DK5LA / produced & edited by Steve Spaleta ...

Our satellite is a little off-balance. GRAIL data show a mass asymmetry of a few percent between its near and far sides.

Ever since its formation around 4.5 billion years ago, Earth's rotation has been gradually slowing down, and its days have ...

Mind-boggling beauty abounds in photographs from around the globe submitted to this year's Milky Way Photographer of the Year ...

New Moon brings excellent dark-sky conditions for observing galaxies, nebulae, and star clusters in the sky this week.