A comical planetary beauty contest is described, highlighting the unique traits of each planet: Mercury’s fiery nature, Venus ...

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

Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

According to a memo from the Department of the Navy obtained by ABC 10News, a stop-work order was issued last week to Marine ...

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

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

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

Astrologer Alexandria Lettman reveals what the stars have in store for every zodiac sign's horoscope on Monday, February 10, ...

Pluto isn't alone—it's part of the Kuiper Belt with possibly hundreds of other planet-sized objects. Because Pluto hasn't ...

Look about an hour before sunrise on Feb. 1 and find Venus, bright but very low, in the southeast, with much dimmer Mercury to its lower left. Far to Venus’s upper right shines Saturn, and ...

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to the bottom of whether Pluto is a planet, I tracked down planetary scientist ...