One such moment was when space craft sent back images of the Earth for the first time. Another is the discovery of life on ...

April’s planetary parade has fewer planets. Only four will line up: Venus, Saturn, Mercury and Neptune. April's parade of ...

A rocket’s thunderous roar, a streak of flame carving through the sky, and the ambitions of one company seem to pull the ...

The night sky this week brings a first peek at the Lyrids Meteor Shower before its actual peak, plus planets including Venus, ...

A new image has emerged of the Red Planet rising above the lunar limb after being occulted by the moon in January.

We all know Mars is called “The Red Planet,” but have you ever stopped to wonder—why is it red? The classic joke explanation ...

Catch two transits of Io, spot sparkling star clusters, and view Mars at aphelion while the April Full Moon lights the sky ...

Venus, Saturn, and Mercury are full of surprises this month, and they have one more awe-striking display in store. Before ...

While ascending Mount Sharp, NASA's Mars rover Curiosity has had to swing around a small ridgeline dubbed "Devil’s Gate." ...

While ascending Mount Sharp, NASA's Mars rover Curiosity has had to swing around a small ridgeline dubbed "Devil’s Gate." ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

All winter long the great constellation Orion the Hunter has roamed our skies, with its bright belt of three stars in nearly ...