Science fiction promises faster-than-light travel and easy journeys to other stars, but physics may have built a prison ...

Both inside and outside the solar system, aurorae light up the skies of planets, moons, and a variety of other celestial objects. With their emissions ranging from X-ray to radio wavelengths, aurorae ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming ...

Researchers are reporting progress on the road to more efficient utilization of solar energy: They have developed an innovative light-harvesting system. In order to convert sunlight into electricity ...

Unlike conventional solar systems, which are hampered by the sun’s fluctuations and require backup systems to even them out, ...

On August 25th, 2012, humanity became an interstellar species. There was no fanfare or galactic welcome party as a humble robotic probe, the Voyager 1 spacecraft, crossed an invisible threshold. It ...

And the earth was without form and void, and darkness was upon the face of the deep. Sometimes, if the night is dark and clear enough, you can look up and see the Milky Way in its arc across the sky.