At long last, NASA’s probe finally digs in on Mars
The robotic scoop-arm pins “the mole” against the side of its hole in an attempt to get it moving. (NASA/JPL-Caltech/)Every day, the InSight lander’s suite of instruments sends back data proving that the Red Planet isn’t really dead. Marsquakes rumble the seismometer. Swirling vortices register on onboard pressure sensor. And temperature sensors help track the weather and changing of the seasons. Despite the lander’s successes, however, one gauge has met with resistance from the Martian environment while trying to carry out its mission. Something has stopped InSight’s 15-inch digging probe, dubbed “the mole” for its burrowing prowess. Instead of diving deep into the Martian sand where it could take the planet’s temperature, it’s been stuck half-buried. An intercontinental team of MacGyvers has spent a year devising successively daring plans to get the mole digging again, but still it flounders on the surface. Now their final gambit—directly pushing the mole into...