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The Watch Lonely Wives Club 3 Onlinehardest working rover on Mars is fighting for its robotic life on the red planet.

NASA announced on Friday that the Opportunity rover is currently being hit by the worst dust storm it's ever experienced in the 15 years since it landed on Mars.

"A dark, perpetual night has settled over the rover's location in Mars' Perseverance Valley," NASA said in a statement.

Scientists are worried the rover won't survive this storm, but there's still hope.

On Sunday, Opportunity phoned home, sending a transmission to engineers back on Earth. This means the rover had enough power to send a message despite the fact that the sun was blotted out by dust, preventing a full charge to its solar panels.

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The storm is actually 7 million square miles across, meaning that it's larger than North America, according to NASA.

Since the storm began bearing down on Opportunity, the rover has started conserving energy by ending science operations and only using minimal power to keep it warm during the tempest.

This storm is bad, but Opportunity is made of hardy stuff. The rover was only designed to last 90 days, yet here we are more than a decade later, a still-functioning Opportunity on Mars.

Keeping watch over the rover

Scientists working with the rover and many others have become attached to the intrepid space robot. They're hoping for the best.

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That said, it's a terrible storm.

"The storm's atmospheric opacity — the veil of dust blowing around, which can blot out sunlight — is now much worse than a 2007 storm that Opportunity weathered," NASA said.

"The previous storm had an opacity level, or tau, somewhere above 5.5; this new storm had an estimated tau of 10.8 as of Sunday morning."

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The main concern NASA has with this kind of tempest is that the rover's batteries will get too cold and it won't be able to function once the dust storm ends. Opportunity is in low power mode in order to make sure it can keep warm until the storm ends.

For now, the engineers will just need to wait it out and see how the little robot comes through the storm.