Study finds astronauts' hearts become more spherical in space

New findings from a study of 12 astronauts show the heart becomes more spherical when exposed to long periods of microgravity in space, a change that could lead to cardiac problems, according to research to be presented at the American College of Cardiology's 63rd Annual Scientific Session.

An astronaut's rhythm

Anyone who has flown long distances will be familiar with the jetlag that comes with travelling across time zones. Our body clocks need time to adjust to different daylight times as high-fliers and frequent travellers know all too well. But what about astronauts, the highest fliers of all? Do they suffer from rocket-lag?

Mars One astronaut selection starts today

The search to find the first humans to set foot on another planet begins in earnest today April 22, when Mars One launches its much-vaunted astronaut selection programme in New York.

Expedition 33 complete as astronauts land safely in Kazakhstan

Three astronauts have returned safely to Earth after 127 days in space on the International Space Station. 

Astronaut Sally Ride shuffles off this mortal coil



Sally K. Ride died peacefully on July 23rd, 2012 after a courageous 17-month battle with pancreatic cancer. 



NASA sues former Apollo astronaut

The U.S. government is suing former NASA astronaut Edgar Mitchell for attempting to sell one of  two cameras from the Apollo 14 lunar module Antares.