Astronaut in same pants for month

An astronaut has been testing the limits of technology, by wearing the same pair of underpants for a month.

Koichi Wakata has been up in the International Space Station for 138 days, and wore the hi-tech pants as part of an experiment.

They were developed in Japan, and are designed not to smell. "My space station crew mates never complained," he told an interviewer on Thursday.

Dr Wakata's well-worn pants will be examined now they've returned to Earth.

The ISS is about the size of a four-bedroom house

Find out more about the ISS here

The space shuttle Endeavour brought Dr Wakata home, along with six other astronauts, on Friday afternoon.

There should be a lot more room on the ISS now they've left.

The shuttle crew took the number aboard the ISS to 13, the most it's ever housed.

While they were aboard they helped finish a laboratory and brought lots of spare parts with them.