Video preview of Tim Peake’s spacewalk

Tim Peake speaks to Astronomy Now’s Greg Smye-Rumsby about his historic mission to the International Space Station, scheduled for launch on 15 December 2015.

Watch live as ESA astronaut Tim Peake becomes the first British citizen to walk in space. He will step outside the International Space Station with fellow astronaut Tim Kopra to perform crucial repairs on the orbiting outpost’s electrical system.

Physicists are gearing up to send a re-engineered science instrument originally designed for lofty balloon flights high in Earth’s atmosphere to the International Space Station next week to broaden their knowledge of cosmic rays, subatomic particles traveling on intergalactic routes that could hold the key to unlocking mysteries about supernovas, black holes, pulsars and dark matter.