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First Person -- Dr. Kevin Grazier

Kevin Grazier
Published: March 28, 2005

Get an inside view of NASA's Cassini mission to Saturn with JPL's Dr. Kevin Grazier, who also discusses his career covering science fact and fiction.

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Nitrogen dioxide pollution, averaged yearly from 2005-2011, has decreased across the United States.
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Animation showing decrease in nitrogen dioxide concentration from 2005 to 2011
Breathing Cleaner in the U.S.
A striking color-enhanced view of Jupiter's Great Red Spot and turbulent southern hemisphere was captured by NASA's Juno spacecraft.
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Global view of Jupiter.
Spot On Jupiter
The real jewels of Saturn are arguably its stunning collection of icy moons. Seen here with the unlit side of the rings are Titan (5,150 kilometers, or 3,200 miles across at right), Tethys (1,071 k...
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The unlit side of the rings, with Titan, Tethys and Enceladus
The Moons Are the Stars
An image of Phobos by the High-Resolution Stereo Camera on board ESA's Mars Express spacecraft on January 22, 2007.
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An image of Phobos by the High-Resolution Stereo Camera on board ESA's Mars Express spacecraft on January 22, 2007.
Phobos Just Below Mars Limb
Pan is nearly lost within Saturn's rings in this view that captures a small section of the rings from just above the ringplane. Pan (28 kilometers, or 17 miles across) appears a small bright dot o...
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Saturn's rings
Lost Among Rings
Off the shoulder of giant Saturn, a bright pinpoint marks the location of the ring moon Atlas (image center). Shadows cast by the C ring adorn the planet at upper right. The thin boundary of Satur...
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Saturn, its rings and the moon Atlas
Sojourn at Saturn
Titan's equatorial latitudes are distinctly different in character from its south polar region, as this image shows. The dark terrain, presumably lowland, seen here does not extend much farther so...
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Titan's equatorial latitudes are distinctly different in character from its south polar region, as this image shows
Dawn at the Huygens Site
Saturn's A ring is decorated with several kinds of waves. 
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Saturn's rings and Daphnis
Rings and Waves
This image from NASA's Dawn spacecraft shows a small, young, fresh crater on asteroid Vesta with bright and dark rays extending from it.
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Fresh Crater with Bright and Dark Rays
Fresh Crater with Bright and Dark Rays
Saturn’s moon Enceladus drifts before the rings and the tiny moon Pandora in this view that NASA’s Cassini spacecraft captured on Nov. 1, 2009. The entire scene is backlit by the Sun, providing str...
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A backlit view of Enceladus and Saturn's rings
A Song of Ice and Light
+ Also see Titan's Lingering Clouds -- Annotated Lots of clouds are visible in this infrared image of Saturn's moon Titan. These clouds form and move much like those on Earth, but in a much slower...
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Three false-color images make up this mosaic view of Titan and show the clouds at 40 to 50 degrees mid-latitude.
Titan's Lingering Clouds
This false-color composite image, constructed from data obtained by NASA’s Cassini spacecraft, shows Saturn’s rings and southern hemisphere.
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This false-color composite image shows Saturn's rings and southern hemisphere
Majestic Saturn, in the Infrared
In this fabulous close-up, Cassini peers directly through regions of the A, B and C rings (from top to bottom here) to glimpse shadows of the very same rings cast upon the planet's atmosphere. Near...
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A fabulous close-up of Saturn's rings
Looking Through the Rings
Technicians Susan Ung and Andy Anderson cut and stitch the gold-colored thermal blankets for NASA's Cassini spacecraft.
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Color image of woman sewing a gold-colored thermal spacecraft blanket.
Cassini's Space Suit
This trio of Junocam views of Earth was taken during Juno's close flyby on October 9, 2013.
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This trio of Junocam views of Earth was taken during Juno's close flyby on October 9, 2013.
Earth Triptych from NASA's Juno Spacecraft
This sweeping mosaic of Saturn's moon Enceladus provides broad regional context for the ultra-sharp, close-up views NASA's Cassini spacecraft acquired minutes earlier, during its flyby on Aug. 11, ...
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Enceladus
Great Southern Land
he northern and southern hemispheres of Dione are seen in these polar stereographic maps, mosaicked from the best-available clear-filter images from NASA's Cassini and Voyager missions. Each map i...
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Dione Polar Maps
Dione Polar Maps - October 2010
                  Rings and Moons June 21, 2004   Full-Res: PIA05410                     Saturn¿s magnificent rings sh...
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Rings and Moons
Rings and Moons
During its very close flyby of Enceladus on March 9, 2005, Cassini took images of parts of the icy moon from different viewing angles, allowing the construction of stereo views. These "3-D" views, ...
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Close-up view of Enceledus (3-D)
Sliced-up Craters (3-D)
The Cassini spacecraft and Huygens probe begin their seven-year journey to the ringed planet. The successful launch of Cassini aboard a Titan IVB/Centaur occured at 4:43 a.m. EDT, October 15, 1997.
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Liftoff!
Liftoff!
This image of Titan, taken by a Voyager spacecraft, shows Titan to be completely shrouded by a thick atmosphere. The atmosphere is about 95% nitrogen, the remainder methane as well as other hydroca...
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Titan
Titan
NASA's Mars Exploration Rover Opportunity recorded the dawn of the rover's 4,999th Martian day, or sol, with its Panoramic Camera (Pancam) on Feb. 15, 2018, yielding this processed, approximately t...
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Dawn of the rover's 4,999th Martian day
New Day for Longest-Working Mars Rover
                  Rings Full of Waves (zoom) July 1, 2004   Full-Res: PIA06096   This image shows a close-up view of ...
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Rings Full of Waves (zoom)
Rings Full of Waves (zoom)
The European Space Agency's Huygens probe appears shining as it coasts away from Cassini in this image taken on Dec. 26, 2004, just two days after the probe successfully detached from the Cassini s...
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Black and white image shows Huygens Probe as a bright white flare in lower right of image.
Huygens Probe Shines for Cassini's Cameras (Unlabeled)
In this image, Saturn's fascinating meteorology manifests itself in a "string of pearls" formation, spanning over 60,000 kilometers (37,000 miles). Seen in new images acquired by Cassini's visual ...
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Saturn in infrared
String of Pearls

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