New analysis techniques and decades-old research helped NASA scientists identify an unusual black hole in a distant galaxy.

Astronomers have discovered an important piece of the puzzle of how supermassive black holes were able to grow so quickly in ...

Scientists recorded a total-column ozone concentration of 102 Dobson units, the 8th-lowest level since 1986. Colder-than-average temperatures and strong winds in the stratosphere circling Antarctica ...