NASA's Cassini spacecraft orbiting Saturn has spotted intense blue daytime lightning on the ringed planet. Previously lightning had only been detected on Saturn's night side.
Using data from the Hubble telescope, scientists have found the oldest spiral galaxy in the universe, a galaxy that, according to current models, isn't supposed to exist.
The NASA's Spitzer Space Telescope reveals astronomers a new alien planet possibly covered with molten lava.
Scientists spaced thousands of miles apart discovered a super massive black hole inside a quasar some five billion light-years from Earth
The 11-year-old orbiter tasked with monitoring Curiosity's landing has lost the use of one of its three reaction wheels, but NASA says it will be fine.
NASA's Curiosity rover is due to touch down on the Martian surface on August 5, but a malfunction in another NASA spacecraft orbiting Mars will mean we'll all have to wait longer to find out if the landing is successful.
Three weeks before the Mars Curiosity rover is scheduled to touch down on the Red Planet, NASA had unveiled a new video game that takes players through the spacecraft's 'seven minutes of terror.'
As NASA's planetary exploration budget is squeezed, NASA scientists are finding new ways to lower the costs of future Mars rover missions.
This weekend's solar storm brought spectacular auroras over a big part of the Northern Hemisphere. Here are five facts about these dazzling – and sometimes dangerous – eruptions from our sun.
SpaceX's Dragon space capsule has passed a main design review, brining the private spacecraft closer to carrying astronauts into orbit.