Voting from space!

In a US presidential election that's already been out of this world, the lone American astronaut in outer space has cast his vote, Nasa said Monday.

Shane Kimbrough became the latest astronaut to join in a long tradition of voting while floating above the Earth, inside the orbiting International Space Station.

US astronauts have been able to vote from space since 1997, under Texas law. Most astronauts live in the Houston area, home to Nasa's mission control and Johnson Space Center.

The first American to vote from space was David Wolf, who cast his ballot from the Russian space station Mir.