Sovereignty in outer space is always a tricky subject, but out of all the lifeless rocks in the Solar System it was safe to say Mars was more American than most.

Most people associate Nasa with rocket science but now the American space agency has turned its attention to rocket salad.

Nasa has revealed that one twin will be put in a rocket and the other kept on the ground as part of a study on the effects of orbiting the Earth.

Modern civilisation is heading for collapse within a matter of decades, according to a scientific study funded by Nasa.

Scientists in Australia say they have begun work on a project that will see lasers fired from Earth to blast away the thousands of tonnes of space debris orbiting our planet.

Following the release of Oscar-winning film Gravity, NASA has released a series of photographs depicting the 'real-life Gravity'. Including photos on the International Space Station, Space Shuttle, NASA astronauts and various images of Earth captured from space.

The sun is set to “flip upside down” within weeks as its magnetic field reverses polarity in an event that will send ripple effects throughout the solar system.

The European Space Agency says one of its research satellites re-entered the Earth's atmosphere on an orbit that passed over Siberia, the western Pacific Ocean, the eastern Indian Ocean and Antarctica.

A one-tonne satellite operated by the European Space Agency has run out of fuel and will fall back to Earth in an unknown location sometime in the next few days.

The Curse of Mars also applies to Asian countries, writes Gwynne Dyer. About two-thirds of the attempted missions to Mars have failed, many of them even before leaving Earth's orbit.

Qantas is rolling out a near life-size replica of Mars rover Curiosity around New Zealand to promote its frequent flyer programme.

NASA's Jupiter-bound spacecraft hit a snag soon after it used Earth as a gravity slingshot to hurtle toward the outer solar system, but mission managers said it's on course to arrive at the giant planet in 2016.

An Italian astronaut aboard the International Space Station has captured glimpses of New Zealand in images posted on social media this week.

Canadian astronaut Chris Hadfield and American colleague Thomas Marshburn who are avid users of Twitter aboard the International Space Station have taken several stunning photos of New Zealand as they orbit 370km above the Earth.

We are not alone. Scientists have discovered a second blue planet in the Universe, although this one is decidedly inhospitable and unlikely to support life.

Paul Charman salutes Voyager 1's famous gold record.

The path of last month’s devastating tornado through the Oklahoma City suburb of Moore is revealed as a scar across the city in a NASA satellite image.

The first people to make the perilous journey to Mars will have to cope with long periods of boredom, the constant worry of returning safely and the joy/pain of each other's company.

Is working from home really working? Anthony Doesburg reports.