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Pi in the Sky 2

Take JPL Education's Pi Day challenge featuring real-world questions about NASA spacecraft -- then tweet your answers to @NASAJPL_Edu using the hashtag #PiDay. Answers will be revealed on March 16.

March 12, 2015

Take JPL Education's Pi Day challenge featuring real-world questions about NASA spacecraft -- then tweet your answers to @NASAJPL_Edu using the hashtag #PiDay. Answers will be revealed on March 16.

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NASA/JPL-Caltech

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This graphic shows the route that NASA's Mars Exploration Rover Opportunity drove in its final approach to "Perseverance Valley" on the western rim of Endeavour Crater during spring 2017.
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This graphic shows the route that NASA's Mars Exploration Rover Opportunity drove in its final approach to "Perseverance Valley" on the western rim of Endeavour Crater during spring 2017.
From 'Tribulation' to 'Perseverance' on Mars
This synthetic image of the Spirit Mars Exploration Rover on the flank of "Husband Hill" was produced using "Virtual Presence in Space" technology.
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This synthetic image of the Spirit Mars Exploration Rover on the flank of "Husband Hill" was produced using "Virtual Presence in Space" technology.
Spirit on Flank of "Husband Hill"
NASA's Mars Exploration Rover Opportunity has extended its robotic arm for studying a light-toned rock target called "Athens" in this March 25, 2015, image from the rover's front hazard avoidance c...
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NASA's Mars Exploration Rover Opportunity has extended its robotic arm for studying a light-toned rock target called "Athens" in this March 25, 2015, image from the rover's front hazard avoidance camera.
Mars Rover Opportunity Examines Bright 'Athens'
Wheel tracks from NASA's Mars rover Opportunity descending and departing the "Cape Tribulation" segment of Endeavour Crater's rim are visible in this April 21, 2017, view from the rover's Panoramic...
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Wheel tracks from NASA's Mars rover Opportunity descending and departing the "Cape Tribulation" segment of Endeavour Crater's rim are visible in this April 21, 2017, view from the rover's Panoramic Camera (Pancam). The rover looked back northward during its trek south to "Perseverance Valley."
Putting Martian 'Tribulation' Behind
The left image shows an extreme close-up of round, blueberry-shaped formations in the martian soil near a part of the rock outcrop at Meridiani Planum called Stone Mountain.
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The left image shows an extreme close-up of round, blueberry-shaped formations in the martian soil near a part of the rock outcrop at Meridiani Planum called Stone Mountain.
Martian Blueberries
This two-image blink shows a comparison of two exposure times in images from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Opportunity showing comet C/2013 A1 Siding Spring as it f...
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This two-image blink shows a comparison of two exposure times in images from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Opportunity showing comet C/2013 A1 Siding Spring as it flew near Mars on Oct. 19, 2014.
Mars Rover Opportunity's View of Comet (Blink of Two Exposures)
NASA's Mars Exploration Rover Opportunity, working on Mars since January 2004, passed 25 miles of total driving on the July 27, 2014. The gold line on this map shows Opportunity's route from the la...
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NASA's Mars Exploration Rover Opportunity, working on Mars since January 2004, passed 25 miles of total driving on the July 27, 2014. The gold line on this map shows Opportunity's route from the landing site inside Eagle Crater, in upper left, to its location after the July 27 (Sol 3735) drive.
Opportunity's Journey Exceeds 25 Miles
Results from Opportunity and Curiosity show Mars could have supported life.
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Results from Opportunity and Curiosity show Mars could have supported life.
Rover Fist Bump
The "Lion King" panorama was the largest panorama obtained by either rover in 2004.
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The "Lion King" panorama was the largest panorama obtained by either rover in 2004.
'Lion King' Panorama
Spirit used its microscopic imager to capture these spectacular, jagged mini-landscape on a rock called "GongGong." Wind has deposited sand and dust in the holes and crevices of the rock.
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Spirit used its microscopic imager to capture these spectacular, jagged mini-landscape on a rock called "GongGong." Wind has deposited sand and dust in the holes and crevices of the rock.
Hardened Lava Meets Wind on Mars
This image from the front hazard-avoidance camera (Hazcam) on the NASA Mars Exploration Rover Opportunity shows the rover's arm extended for examination of a target called "Onaping" at the base of ...
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This image from the front hazard-avoidance camera (Hazcam) on the NASA Mars Exploration Rover Opportunity shows the rover's arm extended for examination of a target called "Onaping" at the base of an outcrop called "Copper Cliff" in the Matijevic Hill area of the west rim of Endeavour Crater.
Opportunity Investigation Target "Onaping"
This panoramic image, dubbed "Rub al Khali," was taken by Opportunity on the plains of Meridiani during the rover's 456th to 464th sols on Mars.
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This panoramic image, dubbed "Rub al Khali," was taken by Opportunity on the plains of Meridiani during the rover's 456th to 464th sols on Mars.
Opportunity's 'Rub al Khali' Panorama
The piece of metal with the American flag on it in this image of a NASA rover on Mars is made of aluminum recovered from the site of the World Trade Center towers in the weeks after their destruction.
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The piece of metal with the American flag on it in this image of a NASA rover on Mars is made of aluminum recovered from the site of the World Trade Center towers in the weeks after their destruction.
Interplanetary Memorial to Victims of Sept. 11, 2001
After bouncing to a stop, the lander's petals unfold and the Mars Exploration Rover drives onto the surface of Mars.
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After bouncing to a stop, the lander's petals unfold and the Mars Exploration Rover drives onto the surface of Mars.
Artwork of Mars Exploration Rover leaving lander
A "Martian mechanic" checks beneath the completely deployed Rover 1 lander. Atop the lander is Rover 1 with its wheels and solar arrays in the stowed position.
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A "Martian mechanic" checks beneath the completely deployed Rover 1 lander. Atop the lander is Rover 1 with its wheels and solar arrays in the stowed position.
Rover 1 and lander
Steve Squyres, principal investigator for NASA’s Mars Exploration Rover mission, and Matt Golombek, the mission’s project scientist, discussed the ground-breaking science returned by the mission’s ...
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Steve Squyres, principal investigator for NASA’s Mars Exploration Rover mission, and Matt Golombek, the mission’s project scientist, discussed the ground-breaking science returned by the mission’s twin rovers, Spirit and Opportunity, on Feb. 13, 2019.
A Celebration of Science from Spirit and Opportunity
NASA's Mars Exploration Rover Opportunity has been working on Mars since landing inside Eagle Crater on Jan. 25, 2004 (Universal Time; evening of Jan. 24, Pacific Standard Time).
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NASA's Mars Exploration Rover Opportunity has been working on Mars since landing inside Eagle Crater on Jan. 25, 2004 (Universal Time; evening of Jan. 24, Pacific Standard Time).
Opportunity's First Decade of Driving on Mars
This self-portrait of NASA's Mars Exploration Rover Opportunity comes courtesy of the Sun and the rover's front hazard-avoidance camera.
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This self-portrait of NASA's Mars Exploration Rover Opportunity comes courtesy of the Sun and the rover's front hazard-avoidance camera.
Opportunity Catches its Shadow
Download a PDF of the Explore Mars Sticker.
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Explore Mars Sticker
Explore Mars Sticker
A self-portrait of NASA's Mars Exploration Rover Opportunity taken in late March 2014 (right) shows that much of the dust on the rover's solar arrays has been removed since a similar portrait from ...
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This self-portrait from overhead shows a side-by-side view of the rover solar panels. The solar panels on the left appear brown and dusty, while the solar panels on the right are light gray-green and appear wiped clean of dust.
Cleaned Solar Arrays Gleam in Mars Rover's New Selfie
As Opportunity crept farther into "Endurance Crater," the dune field on the crater floor appeared even more dramatic.
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As Opportunity crept farther into "Endurance Crater," the dune field on the crater floor appears even more dramatic.
'Endurance Crater's' Dazzling Dunes
An artist's concept portrays a NASA Mars Exploration Rover on the surface of Mars. Two rovers have been built for 2003 launches and January 2004 arrival at two sites on Mars. Each rover has the mob...
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An artist's concept portrays a NASA Mars Exploration Rover on the surface of Mars.
Artist's Concept of Rover on Mars
This stereo scene from NASA's Mars Exploration Rover Opportunity shows "Spirit Mound" overlooking the floor of Endeavour Crater. The view appears three-dimensional when seen through blue-red glasse...
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This stereo scene from NASA's Mars Exploration Rover Opportunity shows "Spirit Mound" overlooking the floor of Endeavour Crater. The view appears three-dimensional when seen through blue-red glasses with the red lens on the left.
'Spirit Mound' at Edge of Endeavour Crater, Mars (Stereo)
This image shows segments of the western rim of Mars' Endeavour Crater. NASA's Mars rover Opportunity has explored parts of the rim since 2011. The view covers an area about 9 miles wide. It was ta...
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This image shows segments of the western rim of Mars' Endeavour Crater. NASA's Mars rover Opportunity has explored parts of the rim since 2011. The view covers an area about 9 miles wide. It was taken by the Context Camera on NASA's Mars Reconnaissance Orbiter.
Segments on Western Rim of Endeavour Crater, Mars
NASA Science missions circle Earth, the Sun, the Moon, Mars and many other destinations within our solar system, including spacecraft that look out even further into our universe. The Science Fleet...
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NASA Science missions circle Earth, the Sun, the Moon, Mars and many other destinations within our solar system, including spacecraft that look out even further into our universe. The Science Fleet depicts the scope of NASA's activity and how our missions have traveled throughout the solar system.
SMD Spacecraft Fleet

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