Mars ‘dog door’ found by Curiosity rover is just a weird rock

Over the past week, the internet has been wild over images of what appears as a doorway cut into a cliff on Mars.

But scientists behind NASA’s Curiosity rover, which snapped the pictures earlier this month, said that while the strange door-like feature on Mars provides a fascinating “doorway into the ancient past,” it is perfectly natural rather than the work of some aliens in hiding .

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