NASA’s Europa Clipper, a $5.2 billion spacecraft headed for Jupiter’s moon Europa, is carrying a camera with just 8 megapixels — far less than a modern smartphone. But the choice was deliberate: the ...

If you keep at it long enough, that dough gets hot from the constant squeezing. That friction generates heat. Europa experiences these same gravitational tides ... that internal heat is what keeps its ...

When producer Berly McCoy was out on her local frozen lake, she saw something she'd never seen before. There were dark spidery, star-shaped patterns in the ice and they freaked her out. So, we called ...