Polaris Dawn: Billionaire completes first private spacewalk

Spacewalks are one of the most difficult manouevres in space, so the fact that a private company has pulled it off is a milestone in the history of space travel.

This walk at 435 miles (700km) was higher than any previous walk, and used innovative technology in the new extravehicular activity (EVA) astronaut suits.

These are an upgrade from SpaceX’s previous intravehicular activity (IVA) suits.

The EVA suit incorporates a heads-up display in its helmet, which provides information about the suit while it is being used.

Sarah Gillis read out data from her heads-up display during her time outside the Dragon capsule.

SpaceX say the suits are comfortable and flexible enough to be worn during launch and landing, eliminating the need to have separate IVA suits.

Extra nitrogen and oxygen tanks were installed and all four astronauts wore the suits, meaning the mission broke the record for the most people in the vacuum of space at once.

The Resilience spacecraft left Earth on Tuesday on a SpaceX rocket.

The mission said it would travel up to 870 miles (1,400km) up in orbit – further than any human has been in space since Nasa’s Apollo programme ended in the 1970s.