Thursday, August 9, 2012

First 360-Degree Panorama From NASA's Curiosity Mars Rover

PASADENA, Calif. -- 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.
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.
Mars curiosity image
Mars curiosity panorama image

"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."
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.
Curiosity's latest images are available at: http://1.usa.gov/MfiyD0 .
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.
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.
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.
The Mars Reconnaissance Orbiter's High Resolution Imaging Science Experiment (HiRISE) camera is operated by the University of Arizona in Tucson. The instrument was built by Ball Aerospace & Technologies Corp. in Boulder, Colo. The Mars Reconnaissance Orbiter and Mars Exploration Rover projects are managed by JPL for NASA's Science Mission Directorate, Washington. The rover was designed, developed and assembled at JPL. JPL is a division of the California Institute of Technology in Pasadena. Lockheed Martin Space Systems in Denver built the orbiter.

Wednesday, August 8, 2012

Scientists: Martian crater where Curiosity rover touched down looks 'Earth-like'

The ancient Martian crater where the Curiosity rover landed looks strikingly similar to California's Mojave Desert with its looming mountains and hanging haze, scientists said Wednesday.

"The first impression that you get is how Earth-like this seems looking at that landscape," said chief scientist John Grotzinger of the California Institute of Technology.
Overnight, the car-size rover poked its head out for the first time since settling in Gale Crater, peered around and returned a flood of black-and-white pictures that will be stitched into a panorama.
It provided the best view so far of its destination since touching down Sunday night after nailing an intricate choreography. During the last few seconds, a rocket-powered spacecraft hovered as cables lowered Curiosity to the ground.
In the latest photos, Curiosity looked out toward the northern horizon. Nearby were scour marks in the surface blasted by thrusters, which kicked up a swirl of dust. There were concerns that Curiosity got dusty, but scientists said that was not the case.
"We do see a thin coating of dust, but nothing too bad," said Justin Maki, imaging scientist at NASA's Jet Propulsion Laboratory, which manages the $2.5 billion mission.
Scientists were giddy about the trenches because it meant Curiosity could drive up to them and start collecting samples once the science phase of the mission gets under way.
Since landing, Curiosity has zipped home a stream of low-resolution pictures taken by tiny cameras under the chassis and a camera at the end of its robotic arm, which remained stowed. It also sent back a low-quality video glimpsing the last 2 1/2 minutes of its descent.
The rover successfully raised its mast packed with high-resolution and navigation cameras. With the mast up, it can begin its shutterbug days in force including taking a 360-degree color view of its surroundings as early as Thursday.
Grotzinger said he was struck by the Martian landscape, which appeared diverse. There seemed to be harder bedrock underneath the gravelly surface, he said.
"It kind of makes you feel at home," he said. "We're looking at a place that feels really comfortable."
Mars, of course, is very different from Earth. It's a frigid desert constantly bombarded by radiation. There are geological signs that it was a warmer and wetter place once upon a time. One of the mission's goals is to figure out how Mars transformed.
After sailing eight months and 352 million miles, Curiosity parked its six wheels near the Martian equator where it will spend the next two years poking into rocks and soil in search of the chemical ingredients of life.
The $2.5 billion mission is the most ambitious and expensive yet to Mars.
Its ultimate destination is a mountain towering from the center of the crater floor. Preliminary estimates indicate Curiosity landed four miles away from the base of Mount Sharp, thought to contain intriguing signs of past water _ a starting point to learning whether microbial life could exist.
Before the one-ton, nuclear-powered Curiosity can start roving, it has to undergo several weeks of tedious but essential health checks.
Since it was too heavy to land using traditional air bags, it used a heat shield, parachute, rockets and cables. An orbiting spacecraft spotted the discarded spacecraft hardware, including the ballast weights that were shed soon after atmosphere entry.

source: newser.com

Curiosity Bids Goodbye to Heat Shield

This video of thumbnail images from the Mars Descent Imager (MARDI) on NASA's Curiosity rover shows the heat shield dropping away from the rover on Aug. 5 PDT (Aug. 6 EDT). It covers the first 25 seconds of MARDI observations as Curiosity descends toward the surface of Mars, starting about two and one-half minutes before touchdown. The video starts in darkness because there is no illumination inside the aeroshell. It starts about six seconds before heat shield separation (sometimes called heat shield jettison). About one-quarter of the way into this video, the heat shield starts to move away from the rover and back shell, and sunlight illuminates the inside surface of the heat shield. Over the course of the next 19 seconds, we see the heat shield falling away from the lander as the lander rapidly slows under the parachute. The heat shield is 15 feet (4.5 meters) across. 

Mars Curiosity Landing

This film shows the animation of Curiosity's landing as well as an actual time lapse video, made from frames captured by Curiosity. We also have some reaction shots from the landing at JPL HQ and NASA Ames, where a major landing party was under way.