The Sky at Night - Season 2015 - Eps 10: Second Earth?
As we close in on the discovery of the 2,000th planet outside our solar system, or exoplanet, the Sky at Night investigates the techniques that are revealing so much about these alien worlds. The programme asks if we are really any closer to finding another world like our own - a second Earth.
About The Sky at Night

Title: The Sky at Night
First Air Date: 1957-04-24
Last Air Date: 2024-11-11
Status: Returning Series
Rating: 8.417/10 (from 12 votes)
Language: EN
Seasons: 44
Total Episodes: 273
Network: BBC Four
Genres: Documentary, News
Production Companies: Unknown
Synopsis
Your monthly journey through the fascinating world of space and astronomy with the latest thinking on what's out there in space and what you can see in the night sky.