Nasa scientists may still be celebrating their discovery of liquid water on Mars , but they now face some serious questions about how they can investigate further and look for signs of life on the red planet.
The problem is how to find life without contaminating the planet with bugs from Earth.
The Guardian view on the...
The construction of the worlds most powerful rockets designed to take astronauts to Mars has been approved by NASA.
The space launch system (space launch system) which cost $7bn (4.2bn pounds) is scheduled to go for a test launch in Nov 2018 and will take humans to the red planet for the first time by the 2030s.
The SLS will...