Miranda, a small moon of Uranus, hides a feature so extreme that it defies most Earth-bound comparisons. Verona Rupes, a ...

If an antimatter meteor came into our solar system, we’d definitely know about it, says one reader, especially if it hit the ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The sun is expected to last another 5 billion years, at which point it will become unstable and ...