UPDATE (Aug. 9, 2012): During Thursday’s NASA press briefing, I asked MSL mission manager Mike Watkins about the likely impact the debris atop the rover may have on the mission. Although the debris was unexpected, it’s not thought to affect any of the rover’s instrumentation. Read more on Discovery News: “Unexpected Debris atop Curiosity Not a Problem.“
On Sol 2 of NASA’s Mars Science Laboratory mission, we’re certainly not short of new things to look at. Early on Wednesday, the JPL team released images from the rover’s raised mast. Atop the mast is the blocky ChemCam laser, two Mastcams and four Navcams — a collection of equipment that is colloquially referred to as the rover’s “head.” As soon as the mast was deployed, mission controllers switched on the Navcams and commanded Curiosity to look around its new home.
First up was the striking image of the shadow of Curiosity’s “head,” then came the wonderful “Mojave Desert” view across Gale Crater to its rim. Now, in a new flood of hi-res imagery tonight, images of Curiosity’s deck have been released. Interestingly, there’s some debris strewn over the horizontal surface, indicating the one-ton rover’s landing kicked up a lot more than just dust.
During Curiosity’s descent and landing on Sunday night, the famous Sky Crane maneuver was used to lower the rover to the surface. In doing so, the rockets attached to the platform blew away the surface layers of regolith and small rocks, exposing what appears to be bedrock. The craters generated by the rocket thrust is clearly seen in a couple of Navcam images. Although dust was bound to be thrown into the air, inevitably settling on the rover, small rocks also appear to have been blasted onto the rover’s deck. The largest rock pieces appear to be no bigger than the size of a dime — when comparing them with the dimensions of the Radiation Assessment Detector (RAD) instrument (in the top left of both frames in the image above). The RAD’s circular “window” is roughly the size of a coaster.
Could the small rocks cause issues with the operation of instrumentation mounted on the rover’s deck? Were they expected to be blown from the ground onto the deck? It will be interesting to hear what will be discussed by the MSL team during Thursday’s 10 a.m. PDT press briefing.
More cool raw Navcam pics: