NASA's scheme to resurrect the drill on its Mars probe

NASA blasted the InSight lander to Mars with the aim of drilling some 16 feet into the Martian ground. 

But the drill, also called the "mole" or "self-hammering heat probe," only burrowed 14 inches into the soil before getting stuck. The space agency hasn't been able to move the heat-detecting probe since February. 

But NASA has a plan. And the people behind that plan appear confident.

"This is a very, very challenging problem," said Ashitey Trebi-Ollennu, the lead arm engineer at NASA's Jet Propulsion Laboratory. "Sometimes it appears intractable. But we engineers love solving challenging problems." Read more...

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