NASA is stepping up its ability to show us Earth at night, producing a new, more detailed map of lights across the globe that show human activity ...

A meteor streaks across the sky in Vinton, California, during the Perseid meteor shower on Tuesday, Aug. 11, 2009. (AP Photo/Kevin Clifford) The Lyrid meteor shower reaches its peak Friday night into Saturday's pre-dawn hours, when observers can expect to see up to 20 meteors per hour, or roughly one every three minutes.This will be the first meteor shower since January. Although unexpected this year, the Lyrids can sometimes produce as many as 100 meteors in an hour at its...

Stunning time-lapse video from the International Space Station shows lightning from a nighttime storm in California. ...