Nasa fears its Mars rover is dead after battling a dust storm the size of North America
Nasa's Opportunity rover may be dead on Mars, engineers fear. The little robot has been travelling over the planet for the last 15 years, but has lost contact with its team on Earth. They fear that the rover might never wake back up, and its mission could come to an end. Opportunity ran into problems in recent days when a Martian storm that is covering a quarter of the planet swept over the rover. That blotted out the Sun's light, leaving it unable to charge its batteries.