The Sky at Night

Nasa's New Horizons probe notches up another historic first - the first ever Kuiper belt fly-by and an encounter with a chunk of rock and ice four billion miles from Earth.

We know that distant galaxies are racing away from us. But just how fast is the Universe expanding? Scientists are yet to agree on an answer.

Insight - NASA's latest mission to Mars - goes in search of the secrets below its surface to reveal how the planet was formed and why it is so different from the Earth.

A behind-the-scenes encounter with the scientists from the Event Horizon Telescope, which captured the first-ever picture of a supermassive black hole.

The first of two programmes commemorating the 50th anniversary of the moon landings, which looks at current plans by China, Israel, India and the US to send manned missions to the lunar surface, as well as a plan to build a space station in permanent orbit around the moon.

Maggie Aderin-Pocock looks through the archives to show how, with assistance from Nasa, the BBC reported the Apollo 11 mission, the first lunar expedition to put humans on the Moon. She is joined by scientist John Zarneki, the first British astronaut Helen Sharman and writer and broadcaster James Burke, who reported the momentous story at the time.

What are the criteria for deciding which missions make it into space? The Sky at Night meets the British teams vying to have their ideas selected for the European Space Agency's next F-class mission.

Professor Chris Lintott visits the UK Astronomy Technology Centre in Edinburgh, to see a camera designed to take pictures of exoplanets, and journeys through exoplanet discoveries.

A one-hour special in which The Sky at Night team face a live studio audience to answer their questions about the mysteries and wonders of the universe.

The Rosetta mission to comet 67P was the first time a spacecraft landed on a comet's surface. What has this icy body taught us about the dawn of the solar system and the origins of life on earth?

Looking back on the major stories of the year - from the New Horizons mission to the most distant world we have ever visited to the release of the first-ever picture of a black hole. The team relive the highlights and uncover the latest developments.