Ian O'Neill

NASA's Dawn spacecraft has resumed normal operations after a high-energy particle event forced the mission to enter safe mode, knocking its ion drive offline.

The time has come -- the little Mars rover needs its first memory wipe.

Astrophysicists have analyzed two decades-worth of X-ray data and discovered three events inside galactic cores that can be interpreted in only one way: stellar destruction.

Through the analysis of light from distant galactic clusters, astronomers have detected a mysterious signal that they're having a hard time explaining.

Planck space telescope created a cosmic map of variations in the cosmic microwave background (CMB) radiation, but it may contain errors.

A galactic cluster four-way collision has been recorded 5 billion light-years distant, an event previously unseen by astronomers.

Scientists suggest life may have existed on Mars in an oasis for microbial life if liquid water was trapped underground and heated by a volcano.

The "torus model" may be woefully inadequate when explaining what is actually going on.

There are many mysteries about the enigmatic ringed gas giant, but the curious mechanism behind Saturn’s ‘spokes’ is one of the more intriguing puzzles.

NASA’s Mars rover Curiosity has begun science operations in a new area of study nicknamed “the Kimberly” after the Western Australian region.

This newly-released observation of Saturn's second largest moon could be mistaken for our own moon hanging in the night sky.

On Jan. 21, astronomers spotted the closest supernova in recent decades flash to life in the galaxy M82, some 11.5 million light-years from Earth.

Here are amazing photos featuring the top 10 space robot "selfies."