A partial solar eclipse happens Sunday in parts of the Southern Hemisphere. Saturn will also appear at its brightest, with ...

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

A new NASA mission will capture images of Earth's invisible "halo," the faint light given off by our planet's outermost atmospheric layer, the exosphere, as it morphs and changes in response to the ...

Our planet has apparently had a small companion that went undetected for decades. What took so long to find it and why was it hidden?

Saturn is about to make its closest approach to Earth, and that means you might be able to see its rings — if you have a ...

Every year, the moon, Earth's reliable celestial companion for 4.5 billion years, is getting 1.5 inches away. The distance to ...

Analysis by researchers at the University of Bern suggests that water and other volatile compounds arrived on Earth from ...

Material collected from an asteroid via spacecraft closely matches the heavier elements of the sun, providing scientists with ...

Stargazers can tune in to the Virtual Telescope Project's YouTube stream beginning at 11 p.m. EDT on Sept. 17 (3:00 GMT Sept.

A massive space rock that once made its way onto a space agency's warning list for potentially dangerous objects is scheduled ...

NASA’s IMAP mission, led by Princeton University’s David McComas, will study the heliosphere — the invisible electromagnetic ...