Is it possible to build a Dyson sphere that isn't catastrophically unstable? New research says yes, but only in one type of ...

Cats sometimes catch and leave a "gift" for their humans. But why do cats give us dead mice, birds or other prey?

Researchers bombarded these hybrid lifeforms with a year's worth of Martian radiation in just 5 hours — and they survived, ...

Venus will be at its brightest in the morning sky — just 67 days after it was at its brightest in the evening sky. Here's why ...