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TOPIC: Mars Science Laboratory mission


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RE: Mars Science Laboratory mission
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NASA News Conference to Preview August Mars Rover Landing

NASA will hold a news conference at 17:00 UT Monday, July 16, to discuss the upcoming August landing of the most advanced robot ever sent to another world. A new public-engagement collaboration based on the mission also will be debuted.
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Curiosity Mars rover
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Whether they be large or small, on the evening of August 5th (Pacific time), all 76 pyrotechnic devices must work on cue as NASA's next Mars rover, Curiosity, carried by the Mars Science Laboratory, streaks through the Red Planet's atmosphere on its way to a landing at Gale Crater.
Controlled explosions are a valuable tool to those who explore beyond Earth's atmosphere because they are quick and reliable.
Seventeen minutes before landing, the first 10 of 76 pyros will fire within five milliseconds of each other, releasing the cruise stage that provided the entry capsule (and its cocooned descent vehicle and the Curiosity rover) with power, communications and thermal control support during its 254-day journey to Mars.

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RE: Mars Science Laboratory mission
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How JPL will park Curiosity on Mars

Seven minutes are expected to pass between the time the spacecraft carrying Curiosity enters Mars' atmosphere and the time it settles on the Gale Crater. JPL scientists and engineers won't know if the operation was a success for at least 14 minutes, the time it takes for the Mars Odyssey orbiter to communicate with Earth. They won't receive the first photographs for hours.
If all goes well, the rover will rest its six wheels on a spot picked specifically to determine if Mars once sustained life. But the team managing the mission at JPL will be holding its breath until receiving word back from the orbiter that Curiosity is alive.

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Mars Science Laboratory mission
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Challenges of Getting to Mars: Curiosity's Seven Minutes of Terror

Team members share the challenges of Curiosity's final minutes to landing on the surface of Mars.



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Mars Science Laboratory mission
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Revised Landing Target for Mars Rover Curiosity

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This image shows changes in the target landing area for Curiosity, the rover of NASA's Mars Science Laboratory project. The larger ellipse was the target area prior to early June 2012, when the project revised it to the smaller ellipse centred nearer to the foot of Mount Sharp Aeolis Mons, inside Gale Crater.
This oblique view of Aeolis Mons is derived from a combination of elevation and imaging data from three Mars orbiters. The view is looking toward the southeast.

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NASA Hosts Teleconference About Rover En Route To Mars Landing

NASA will host a media teleconference at noon EDT, June 11, to provide a status update on the Aug. 5, 2012, landing of the most advanced rover ever to be sent to Mars.
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Mars Science Laboratory Landing (with space music)



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Mars rover Curiosity
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En route to the Red Planet, Mars rover Curiosity has experienced the strongest solar radiation storm since 2005. No need to be alarmed: Researchers say it's all part of Curiosity's job as a 'stunt double' for human astronauts.

On Jan. 27th, 2012, Curiosity's spacecraft was hit by the most intense solar radiation storm since 2005.   The event began when sunspot AR1402 produced an X2-class solar flare. (On the "Richter Scale of Solar Flares," X-flares are the most powerful kind.)  The explosion accelerated a fusillade of protons and electrons to nearly light speed; these subatomic bullets were guided by the sun's magnetic field almost
When the particles hit the outer walls of the spacecraft, they shattered other atoms and molecules in their path, producing a secondary spray of radiation that Curiosity both absorbed and measured.

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Mars Science Laboratory mission
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Spacecraft Computer Issue Resolved

Engineers have found the root cause of a computer reset that occurred two months ago on NASA's Mars Science Laboratory and have determined how to correct it.
The fix involves changing how certain unused data-holding locations, called registers, are configured in the memory management of the type of computer chip used on the spacecraft.  Billions of runs on a test computer with the modified register configuration yielded no repeat of the reset behaviour. The mission team made this software change on the spacecraft's computer last week and confirmed this week that the update is successful.

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Curiosity Mars rover
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Mars-Bound NASA Rover Carries Coin for Camera Checkup

The camera at the end of the robotic arm on NASA's Mars rover Curiosity has its own calibration target, a smartphone-size plaque that looks like an eye chart supplemented with colour chips and an attached penny.
When Curiosity lands on Mars in August, researchers will use this calibration target to test performance of the rover's Mars Hand Lens Imager, or MAHLI. MAHLI's close-up inspections of Martian rocks and soil will show details so tiny, the calibration target includes reference lines finer than a human hair. This camera is not limited to close-ups, though. It can focus on any target from about a finger's-width away to the horizon.

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