Nasa

A defunct Nasa space satellite has re-entered the earth’s atmosphere, the US space agency has announced, although its precise re-entry time and location are not yet known.

The world’s leading expert on space waste has warned that the risk of a disastrous collision between orbiting objects is increasing.

Nasa scientists claim they have discovered new evidence that water flows on Mars, raising the possibility that life could exist on the planet.

As Nasa releases new images from space of the asteroid Vesta, an astronomer tells Channel 4 News why getting up close and personal with the giant rock is so significant.

Following its final mission to the International Space Station, the crew onboard the Atlantis touch down at the Kennedy Space Centre ending a 30-year history for Nasa’s shuttle programme.

As the Atlantis prepares for the final mission of the space shuttle programme, an astronaut, a space policy analyst and a Nasa surgeon whose wife died on the Columbia reflect on the end of an era.

As final preparations are made for the Atlantis lift-off at the Kennedy Space Center, Channel 4 News Washington Correspondent Sarah Smith asks what Nasa’s space shuttle programme has achieved?

After 19 years in service and 25 flights, the Endeavour space shuttle returns to the Kennedy Space Center.

Space hotels, bases on the moon and orbiting Venus: half a century after Yuri Gagarin became the first man in space, writer Nick Spall looks at what to expect in the next fifty years.

The world’s most travelled space shuttle, Discovery, successfully lands at the Kennedy Space Center in Florida following its 39th and final flight.

Humans land on Mars – but this time it’s just a shed in Moscow on a 500-day simulated mission. A space expert tells Channel 4 News we may have to wait until the 2040s to see the real thing.

The trapped miners in Chile are a crucial step closer to freedom after the completion of a rescue shaft. Foreign Correspondent Jonathan Miller describes the “very real prospect of imminent release”.

Photographs of science correspondent Julian Rush, travelling with British astronaut Tim Peake to see the space shuttle Discovery launch. Pictures courtesy of their cameraman, Dai Baker. Lightning above the lauch pad postpones the Discovery’s first liftoff slot.

I’m looking for someone to tile my bathroom; do you think I could get NASA to do the job? I’m standing underneath the belly of the Space Shuttle Atlantis in the Orbiter Processing Facility at the Kennedy Space Centre in Florida. The urge to reach up and touch the hundreds of heat-streaked tiles on the…

“You’re Tim Peake, aren’t you?  The new British astronaut?”