Watch: Astronauts on ISS celebrate space station’s 25th anniversary

Watch as astronauts on board the International Space Station (ISS) celebrate its 25th anniversary on Wednesday, 6 December.

A live event with the crew from the station marked a quarter of a century since the Russian Zarya and US Unity modules met up on 6 December 1998.

Nasa celebrated by holding a space-to-Earth call with Expedition 70 astronauts, Nasa Associate Administrator Bob Cabana, and space station program manager Joel Montalbano.

Cabana was the commander of the mission and the first American to enter the space station on 6 December 1998, when the first two elements of the orbital outpost were attached by astronauts.

Since then, astronauts have continuously lived and worked aboard the space station for more than 23 years, and it has been visited by 273 people from 21 countries.