If you’re going to go through the effort of sending a mechanical explorer millions of miles across the galaxy, all the way to Mars, you better make damn sure it has the appropriate traction and can function in adverse conditions. NASA recently ran into just this problem with their Curiosity rover, which just got stuck in a sand trap, and no, it’s not the same kind of sand trap you hit your golf ball into last weekend. Curiosity has a job to do, it doesn’t have time to hit the links.
The one-ton rover is in the process of heading to Mount Sharp, which has been its ultimate destination all along, despite the meandering, roundabout route. At 3.4 miles high, the peak sits in the middle of Mars’ Gale Crater, and in order to access the site, Curiosity planned a path through the Hidden Valley (no salad dressing jokes please).