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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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+ View high res + View unannotated version + View contrast enhanced version On July 19, 2013, in an event celebrated the world over, NASA's Cassini spacecraft slipped into Saturn's shadow ...
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                  New Radiation Belt August 5, 2004     The magnetospheric imaging instrument onboard Cassini recentl...
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NASA's Dawn spacecraft took this image of Xevioso Crater on Oct. 15, 2015. Xevioso is located in the vicinity of Ahuna Mons, the tall, lonely mountain seen toward the bottom of the picture.
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This excellent grouping of three moons --Dione, Tethys and Pandora-- near the rings provides a sampling of the diversity of worlds that exists in Saturn's realm. A 330-kilometer-wide (205 mile) im...
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three moons together
Satellite Trio
This is one of the first raw images returned by the European Space Agency's Huygens probe during its successful descent to Titan. It was taken at an altitude of 8 kilometers with a resolution of 20...
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black and white image of titan's surface
Huygens at Titan 3
In addition to being evidence of past impacts, craters can serve another valuable scientific purpose.
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Polar Scars
Titan bears a distinct east-west banded pattern in this Cassini spacecraft image taken in the ultraviolet. The ultraviolet wavelength allows Cassini to see Titan's stratosphere, where superrotatio...
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Bands of Titan
Among the highest features seen by NASA's Dawn spacecraft on Ceres so far is a mountain about 4 miles (6 kilometers) high, which is roughly the elevation of Mount McKinley in Alaska's Denali Nation...
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The Cassini Radar Mapper imaged Titan on Feb. 22, 2008 (as shown on the left) and April 30, 2006 (as shown on the right). These radar images show the outlines of regions "1" and "2" identified by...
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The Cassini Radar Mapper imaged Titan on Feb. 22, 2008 (as shown on the left) and April 30, 2006 (as shown on the right).
Active Cryovolcanic Features on Titan?
+ View False Color Version Ligeia Mare, shown here in a false-color image from NASA's Cassini mission, is the second largest known body of liquid on Saturn's moon Titan. It is filled with liquid ...
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Ligeia Mare on Titan
Vast Ligeia Mare (black and white mosaic)
Zooming In On Titan October 25, 2004 Full-Res: PIA06116 This map of Titan's surface, generated from images taken during Cassini's...
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Zooming In On Titan
Zooming In On Titan
NASA's Dawn spacecraft captures part of the northern rim of Urvara Crater (101 miles, 163 kilometers wide). obtained on June 2, 2016, from its low-altitude mapping orbit, at a distance of about 240...
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Dawn LAMO Image 179
Dawn LAMO Image 179
The stars of the Pleiades cluster, also known by the names "M45" and "the Seven Sisters," shine brightly in this view from the Cassini spacecraft. The cluster is comprised of hundreds of stars, a f...
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The stars of the Pleiades cluster
The Seven Sisters
An artist's conception of an impact event on asteroid Pallas. 
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An artist's conception of an impact event on asteroid Pallas.
Impact on Asteroid Pallas
Cassini's ability to remain precisely and steadily pointed at targets, such as Saturn's moon Mimas (seen here) yields sharp images despite the relatively high speed at which the spacecraft moves. ...
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Saturn's moon Mimas
Target Locked
This artist's conception of the Cassini orbiter shows the Huygens probe separating to enter Titan's atmosphere. After separation, the probe drifts for about three weeks until reaching its destinati...
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Huygens Probe Release
Huygens Probe Release
Gazing Down November 30, 2004 Full-Res: PIA06532 Cassini pierced the ring plane and rounded Saturn on Oct. 27, 2004, capturing this v...
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Gazing Down
Gazing Down
This image obtained by NASA's Cassini spacecraft around the time it went into orbit around Saturn in 2004 shows a short trail of icy particles dragged out from Saturn's F ring. While scientists did...
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Saturn's F ring
Small Trail at Saturn Orbit Insertion
The northern and southern hemispheres of Tethys are seen in these polar stereographic maps, mosaicked from the best-available Cassini images. Each map is centered on one of the poles, and surface ...
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The northern and southern hemispheres of Tethys are seen in these polar stereographic maps, mosaicked from the best-available Cassini images.
Tethys Polar Maps - February 2010
This unprocessed image was captured by NASA's Cassini spacecraft during its Nov. 21, 2009 flyby of Saturn's moon Enceladus. It shows the moon's south polar region, where jets of water vapor and oth...
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In this ultraviolet image of Hyperion, produced using data taken with Cassini's Ultraviolet Imaging Spectrograph during the September 2005 close flyby, brightness contrasts are due to both topograp...
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An ultraviolet image of Hyperion (left) and Hyperion (right)
Hyperion's Icy Surface
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The sun with solar flares
NASA's SDO Sees Sun Emit Mid-Level Flare Oct. 1
Speeding toward pale, icy Dione, Cassini's view is enriched by the tranquil gold and blue hues of Saturn in the distance. The horizontal stripes near the bottom of the image are Saturn's rings. Th...
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Ringside with Dione
This image of a fracture pattern on the floor of Occator Crater was obtained by NASAs Dawn spacecraft on July 25, 2018 from an altitude of about 87 miles (140 kilometers).
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Fracture Pattern on the Floor of Occator Crater
Fracture Pattern on the Floor of Occator Crater

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