Frost on Mars? Curiosity uses its laser to probe mystery (#PewPew)

The Mars Curiosity rover, cozy at the sandy, windblown patch of ground called Rocknest, pulled out its laser late last week, aimed it at a target about 9 feet away and started zapping. The goal? To find out whether frost accumulates on Mars’ surface at night, according to Roger Wiens of Los Alamos …