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Curiosity Delivers More and More Images of Mars
read more at Anne’s Astronomy News http://annesastronomynews.com/
Remarkable image sets from NASA’s Curiosity rover and Mars Reconnaissance Orbiter are continuing to develop the story of Curiosity’s landing and first days on Mars.
NASA’s Curiosity rover and its parachute were spotted by NASA’s Mars Reconnaissance Orbiter as Curiosity descended to the surface on Aug. 5 PDT (Aug. 6 EDT). The High-Resolution Imaging Science Experiment (HiRISE) camera captured this image of Curiosity while the orbiter was listening to transmissions from the rover. Curiosity and its parachute are in the center of the white box; the inset image is a cutout of the rover stretched to avoid saturation. The rover is descending toward the etched plains just north of the sand dunes that fringe “Mt. Sharp.” Image Credit: NASA/JPL-Caltech/Univ. of Arizona
The images from Curiosity’s just-activated navigation cameras, or Navcams, include the rover’s first self-portrait, looking down at its deck from above. Another Navcam image set, in lower-resolution thumbnails, is the first 360-degree view of Curiosity’s new home in Gale Crater. Also downlinked were two, higher-resolution Navcams providing the most detailed depiction to date of the surface adjacent to the rover.
This image taken by NASA’s Curiosity shows what lies ahead for the rover — its main science target, Mount Sharp. The rover’s shadow can be seen in the foreground, and the dark bands beyond are dunes. Rising up in the distance is the highest peak Mount Sharp at a height of about 3.4 miles, taller than Mt. Whitney in California. The Curiosity team hopes to drive the rover to the mountain to investigate its lower layers, which scientists think hold clues to past environmental change. Image Credit: NASA/JPL-Caltech
“These Navcam images indicate that our powered descent stage did more than give us a great ride, it gave our science team an amazing freebie,” said John Grotzinger, project scientist for the mission from the California Institute of Technology in Pasadena. “The thrust from the rockets actually dug a one-and-a-half-foot-long [0.5-meter] trench in the surface. It appears we can see Martian bedrock on the bottom. Its depth below the surface is valuable data we can use going forward.”
This color thumbnail image was obtained by NASA’s Curiosity rover during its descent to the surface on Aug. 5 PDT (Aug. 6 EDT). The image from Curiosity’s Mars Descent Imager illustrates the roughly circular swirls of dust kicked up from the Martian surface by the rocket motor exhaust. At this point, Curiosity was about 70 feet (20 meters) above the surface. This dust cloud was generated when the Curiosity rover was being lowered to the surface while the sky crane hovered above. This is the first image of the direct effects of rocket motor plumes on Mars and illustrates the mobility of powder-like dust on the Martian surface. It is among the first color images Curiosity sent back from Mars, and was taken about 30 seconds before touchdown. Curiosity landed inside of a crater known as Gale Crater. Image Credit: NASA/JPL-Caltech/MSSS
Another image set, courtesy of the Context Camera, or CTX, aboard NASA’s Mars Reconnaissance Orbiter has pinpointed the final resting spots of the six, 55-pound (25-kilogram) entry ballast masses. The tungsten masses impacted the Martian surface at a high speed of about 7.5 miles (12 kilometers) from Curiosity’s landing location.
Imaging Science Experiment (HiRISE) camera captured this image about 24 hours after landing. The large, reduced-scale image points out the strewn hardware: the heat shield was the first piece to hit the ground, followed by the back shell attached to the parachute, then the rover itself touched down, and finally, after cables were cut, the sky crane flew away to the northwest and crashed. Relatively dark areas in all four spots are from disturbances of the bright dust on Mars, revealing the darker material below the surface dust. Image credit: NASA/JPL-Caltech/Univ. of Arizona
Wednesday, the team deployed the 3.6 foot-tall (1.1-meter) camera mast, activated and gathered surface radiation data from the rover’s Radiation Assessment Detector and concluded testing of the rover’s high-gain antenna.
This Picasso-like self portrait of NASA’s Curiosity rover was taken by its Navigation cameras, located on the now-upright mast. The camera snapped pictures 360-degrees around the rover, while pointing down at the rover deck, up and straight ahead. Those images are shown here in a polar projection. Most of the tiles are thumbnails, or small copies of the full-resolution images that have not been sent back to Earth yet. Two of the tiles are full-resolution. Image Credit: NASA/JPL-Caltech
Curiosity carries 10 science instruments with a total mass 15 times as large as the science payloads on NASA’s Mars rovers Spirit and Opportunity. Some of the tools, such as a laser-firing instrument for checking rocks’ elemental composition from a distance, are the first of their kind on Mars. Curiosity will use a drill and scoop, which are located at the end of its robotic arm, to gather soil and powdered samples of rock interiors, then sieve and parcel out these samples into the rover’s analytical laboratory instruments.
These are the first two full-resolution images of the Martian surface from the Navigation cameras on NASA’s Curiosity rover, which are located on the rover’s “head” or mast. The rim of Gale Crater can be seen in the distance beyond the pebbly ground. The topography of the rim is very mountainous due to erosion. The ground seen in the middle shows low-relief scarps and plains. The foreground shows two distinct zones of excavation likely carved out by blasts from the rover’s descent stage thrusters. Image Credit: NASA/JPL-Caltech
To handle this science toolkit, Curiosity is twice as long and five times as heavy as Spirit or Opportunity. The Gale Crater landing site places the rover within driving distance of layers of the crater’s interior mountain. Observations from orbit have identified clay and sulfate minerals in the lower layers, indicating a wet history.
More of Curiosity’s images are available at: http://1.usa.gov/MfiyD0 .
Source: Jet Propulsion Laboratory (JPL)
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2012-08-09 09:56:49
Source: http://annesastronomynews.com/curiosity-delivers-more-and-more-images-of-mars/
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