OF201, the object belongs to the same all-star family as Pluto: dwarf planets. Its diameter, roughly 435 miles (700 km), is ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

The Solar System might not be as quiet and orderly as we think. Imagine one day looking up and seeing something strange in ...

No telescope has basked in the night sky quite like this before. Here's what it could reveal about the universe.

Cosmoknowledge's video highlights the cosmic forces protecting life on Earth. The Moon stabilizes our oceans and absorbs asteroid impacts, while Jupiter deflects space debris. The Sun's heliosphere ...

Ancient supernovas may have blasted Earth with powerful radiation, causing dramatic changes in our climate, and could do so ...

Could Mysterious Black Hole Burps Rewrite Physics?

Black holes are invisible, yet they are among the brightest things in the universe. If a star wanders too close to a black ...

The Europa Clipper’s journey begins once it leaves Earth to do a flyby around Mars and return to Earth for another flyby to use the two planets’ gravity to propel itself to Jupiter’s moon.