Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

A new study examines how much material from the closest star system to Earth will end up in orbit around the Sun, and how ...

NASA’s Webb Space Telescope reveals ancient surface of Pluto and other celestial bodies for the first time - Scientists say ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

Reaching Mars is no simple feat. While the idea of sending humans to the Red Planet is gaining traction, the journey itself ...

The "Star Trek" legend's only son will discuss his memoir at the annual space-themed event.

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

Why is Pluto no longer a planet? Discover the real reason behind Pluto’s reclassification as a dwarf planet and the science that led to this change.

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...