Mars is probably a pretty lonely place.
The red planet is littered with rusty red rocks and, as far as we know, devoid of any kind of life. But even so, rovers still roam the surface of the world on humanity’s behalf, making their solitary treks along previously unexplored paths.
And sometimes, they make friends.
SEE ALSO: NASA photo captures the loneliness of the Mars Curiosity rover
NASA’s Curiosity rover — which has been exploring the red planet’s Gale Crater since 2012 — appears to have a little pet rock caught in one of its wheels.
The rock got stuck in the right front wheel at some point in the last couple weeks, but scientists aren’t exactly sure when it started hitching a ride because the rover doesn’t snap photos of its wheels every day. Read more…
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