On April 25, early risers may witness a rare event in the sky. Venus, Saturn and the crescent moon will align closely, forming a triangular shape that looks like a smiley face. The phenomenon, known ...

NASA astronaut Matthew Dominick captured this amazing view from the International Space Station using a new 15mm lens (T1.8, 1/3s exposure) that was delivered on a recent Cygnus cargo ship. Credit: ...