Telescopes have come a long way since the first one was invented in 1608. So what's the most powerful telescope operating ...

New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once orbited in mathematical harmony around the infant sun.

Aye-ayes are remarkable thanks to their extra-long, bony middle fingers, which they use to locate grubs and pick their noses.