In 2009, astronomers predicted an unseen dark-matter-dominated dwarf galaxy orbiting our Milky Way - nicknamed Galaxy X. Now they say they've found it.
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!
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.
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!
What caused the collapse of Easter Island's Rapa Nui society? Was it environmental degradation or the arrival of Europeans? New research suggests it was a combination of factors.