Mars was once awash with water. There are two possibilities. Either the water seeped down into the interior, or it was driven into space

As Nasa’s Maven mission arrives at the red planet, we may finally be close to working out where it all went. Read more »

Illustration: AP

Nasa asks members of public to select spacesuit of the future

Nasa has collected more than 200,000 votes from members of the public who are on a mission to help the space agency select the spacesuit of the future.

Voting ends at midnight ET on Tuesday for the newest iteration of Nasa’s spacesuit. The competition pits three suits – “Biomimicry”, “Technology” and “Trends in Society” – against each other before the winner can be tested in Nasa’s facilities. Full story 

Nasa Asteroid Data Hunter contest hopes humans will outsmart dinosaurs

An asteroid at least 10km wide may have seen off the dinosaurs 66m years ago, but will humankind be smart enough to avoid a similar fate?

Nasa is working on it. The space agency has spent the last 16 years searching for near-Earth asteroids larger than 1km in size, and claims to have found 98% of them.

Now it’s enlisting coders and citizen scientists to help with a survey of smaller asteroids that could still be hazardous, including the launch today of a set of “Asteroid Data Hunter” developer contests. Read more

Image: Andrzej Puchta/Alamy

Nasa release images to coincide with Gravity Oscar win

After the film Gravity picked up a handful of Oscars, including for best cinematography and best visual effects, Nasa releases images of the real thing. See more

Click photos for captions and credit

Nasa finds 715 new planets

Scientists added a record 715 more planets to the list of known worlds beyond the solar system, boosting the overall tally to nearly 1,700, astronomers said on Wednesday.

The additions include four planets about two and a half times as big as Earth that are the right distance from their parent stars for liquid surface water, which is believed to be key for life. Read more

Photograph: Corbis

Vintage Nasa Photographs, 1964-1983 – in pictures

An exhibition detailing the achievements of Nasa – covering the golden age of space exploration – has opened, featuring over 100 rare photographs. See more in the full gallery

Click the photos for captions.

Nasa rovers Spirit and Opportunity have spent a decade photographing Mars. Here’s a pick of the best pictures. See more here.

Top to bottom: Opportunity catches its shadow; Blueberries on Mars; and sunset over the rim of Gusev Crater. Photographs: NASA/JPL-Caltech/Texas A&M/Cornell

The Starman falls to earth. Canadian astronaut Chris Hadfield, whose David Bowie cover captured the imagination of Earthlings yesterday, landed safely Tuesday on the steppes of Kazakhstan.

Photograph: Mikhail Metzel/AFP/Getty Images