Step inside the strange world of a superfluid, a liquid that can flow endlessly without friction, defying the common-sense ...

Early risers across North America and Europe may spot a bright, silent light gliding across the Christmas sky — and it just ...

For people, matching what they see on the ground to a map is second nature. For computers, it has been a major challenge. A ...

"I think every astronomer is going to find something of value here, as NASA's missions enable the world to answer fundamental questions about how the universe got its start, and how it changed to ...