Curiosity Scrubs a Mars Rock Clean
astroengine writes "NASA's newest rover on Mars has recently used its Dust Removal Tool for the first time, clearing away a patch of rust-colored dust coating its latest target: a slab of rock called "Ekwir_1." The Dust Removal Tool, or DRT (yes, the rover's cleaning instrument is called "dirt") is a motorized brush with stainless steel wire bristles located on Curiosity's multipurpose Robotic Arm turret — a veritable Swiss Army knife of planetary exploration tools." Reader Sez Zero links to a story on the brushing action at the BBC, which adds that "Curiosity is building towards using its hammer-drill, the last major tool yet to be deployed on the mission."
So at least we know there's dirt on Mars, even if they chose not to send a dedicated life sensor, too. The Aeon piece is well worth reading, if that decision sounds perverse.
JPL is being cagey about this, but if life or even the biochemical signature of past life was encountered by MSL, the mass spectrometer / gas chromatograph would light up like a Christmas tree.