Video preview of Tim Peake’s spacewalk

A NASA instrument built to help astronomers learn about the structure and behaviour of neutron stars, super-dense stellar skeletons left behind by massive explosions, has been mounted to an observation post outside the International Space Station after delivery aboard a SpaceX supply ship earlier this month.

The NICER telescope array aboard the International Space Station has made the most accurate measurements yet of a pulsar’s mass and size.

Tim Peake sees the city lights of his capital city burning bright from the International Space Station last night. He tweeted: “London midnight Saturday – I’d rather be up here…but only just!!”