On Clyde Tombaugh's birthday, newly released images from New Horizons spacecraft showing Pluto and its largest moon, Charon. The craft is now on approach to Pluto!

The space community is buzzing with news of positive steps toward NASA's planned mission to Jupiter's fascinating moon Europa.

New images capture a rare occurrence as three of Jupiter’s largest moons - Europa, Callisto and Io - parade simultaneously across the giant planet’s banded face.

An awesome gallery of photos of Jupiter and the full moon on February 3-4, 2015. Photos by EarthSky friends. Thank you all!

ESA hopes communications with the Philae comet lander can be regained by May or June. Wait you're waiting, check out these stunning newly released images!

Asteroid 2004 BL86 and its newly discovered moon passed only 745,000 miles (1.2 million km) from Earth last week. Did you see the still photos? Now see the movie ...

When our sun and planets were born, the Kepler-444 system was already older than our solar system is now.

Who knew asteroids could have flowing water? They are so small, airless and cold that the idea seems surprising, to say the least. The latest evidence, here.

Discovered in 2010, two vast and mysterious Fermi bubbles radiate out from our Milky Way galaxy's core. An update from the three astrophysicists who found them.

It's a super Saturn, 434 light-years from Earth. It has more than 30 rings, with a total diameter of some 120 million kilometers. If we could replace Saturn’s rings with these rings, they’d be easily visible from Earth and larger in our sky than a full moon.