Curiosity rover’s intriguing geological find
It sent the first image from its 100mm telephoto lens, already spotting an intriguing geological “unconformity”.
Nasa also released a colour panorama of Mount Sharp, the rover’s ultimate goal.
On Monday, the rover relayed “the first voice recording to be sent from another planet”, and on Tuesday it will broadcast a song from artist will.i.am as part of an educational event.
Nasa said that the rover was already returning more data from Mars than all of the agency’s earlier rovers combined.
For now it is examining the “scour marks” left by the rocket-powered crane that lowered the rover onto the planet’s surface, giving some insight into what lies just below it.
Another tool in its arsenal, the ChemCam, which uses a laser to vapourise rock and then chemically examine the vapour, will also have a look at the scour marks.
But what has caught the interest of Nasa engineers already is what is called an “unconformity” spotted in the rover’s first images of Mount Sharp.
The term refers to an evidently missing piece in the geological record, where one layer of sediment does not geologically neatly line up with that above it.
Images from orbit had indicated that the lower foothills of Mount Sharp consisted of flat-lying sediments rich in “hydrated” minerals, formed in the presence of water, but that layers above seemed to lack the minerals.
Now, the rover’s Mastcam – which provided the new colour panorama image – has taken a picture of the divide, showing sediments apparently deposited at a markedly different angle than those below them. Similar deposits on Earth can arise due to tectonic or volcanic activity.
Further investigation will have to wait some time however, as Curiosity takes a bit of a side trip.
The rover’s multimedia streak will continue as it takes a short 10m drive and works on Tuesday to capture stereo imagery – like our eyes, combining two images to gain information about depth and distance.
At 20:00 GMT (13:00 PDT, 21:00 BST), it will relay a new song from will.i.am, to be broadcast on Nasa TV, as part of a primary educational initiative that will make use of Nasa technology including the rover.
On Monday, the rover received and beamed back a message recorded by Nasa administrator Charles Bolden, which read: “The knowledge we hope to gain from our observation and analysis of Gale Crater will tell us much about the possibility of life on Mars as well as the past and future possibilities for our own planet.”
Next stop for the rover will be Glenelg, 400m to the east, which appears to be the intersection of three distinct geological regions – potentially rich pickings for the rover’s suite of tools.
It will then set off for the base of Mount Sharp in a journey that will take several months.
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