bbc.co.uk
Huge dust storms raging on Mars pose the worst threat yet to Nasa's robot rovers, the US space agency has said.
Dust is starving the rovers of power by blocking out the sunlight needed to charge their batteries.

Huge dust storms raging on Mars pose the worst threat yet to Nasa's robot rovers, the US space agency has said.
Dust is starving the rovers of power by blocking out the sunlight needed to charge their batteries.

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