60 seconds: Nasa's Kepler telescope finds new planets
27 February 2014 Last updated at 17:43 GMT
Nasa scientists have identified 715 new planets beyond our Solar System.
The new haul, discovered using the Kepler space telescope, is a major breakthrough, and the largest windfall of planets ever announced at one time.
Take a look at the background to the latest discovery, in 60 seconds.
Video produced by Michael Hirst