Second Earth?

Nov 08, 2015 on BBC FOUR at 10:00 PM


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 ... (more)another world like our own - a second Earth.

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Season 2015 Episode 9

Oct 11, 2015

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The Real Star of Bethlehem: A Christmas Special
Season 2015 Episode 11

Dec 30, 2015