Nasa's Curiosity rover is on course to land on Mars today, where it will search for clues in the Red Planet's rocks and soil about whether it could once have supported life. The robot's flight trajectory is so good engineers cancelled the latest course correction they had planned. To land in the right place, it must hit a box at the top of the atmosphere that measures just 3km by 12km.
Curiosity has spent eight months travelling from Earth to Mars. The robot- also known as the Mars Science Laboratory - has covered more than 560 million km. The rover's power and communications systems are in excellent shape. Watch more on this story.