Series exploring scientific issues looks at how the discovery of a possible tenth planet in our solar system could signal the end of Pluto's planetary status. Show more
First broadcast: on BBC Two Northern Ireland (Analogue)Latest broadcast: on BBC Two England
Horizon discovers that 96% of the Universe's matter is missing and only 4% is made of stuff we understand. The world's leading cosmologists attempt to explain the biggest problem in science today. Show more
First broadcast: on BBC Two Northern Ireland (Analogue)Latest broadcast: on BBC Two England
Investigation of Titan, Saturn's largest moon, after the Cassini spacecraft's seven-year trek landed the Huygens Probe on its surface. Does it reveal how life on Earth began?
First broadcast: on BBC Two Northern Ireland (Analogue)Latest broadcast: on BBC Four HD
Series exploring topical scientific issues examines Stephen Hawking's most controversial theory and possibly his greatest mistake - the information paradox. Show more