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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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Astronaut James B. Irwin, lunar module pilot, works at the Lunar Roving Vehicle during the first Apollo 15 lunar surface extravehicular activity (EVA) at the Hadley-Apennine landing site.
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Astronaut James B. Irwin standing next to the Lunar Roving Vehicle on the moon
Apollo 15 on the Moon
Artist's concept of NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft in orbit above the moon as dust scatters light during the lunar sunset.
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Artist's concept of NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft in orbit above the moon as dust scatters light during the lunar sunset.
LADEE Above Lunar Sunset Artist's Concept
The visual and infrared mapping spectrometer instrument onboard Cassini has found an unusual bright, red spot on Titan. This dramatic color (but not true color) image was taken during the April 16...
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Image of an unusual bright, red spot on Titan
Red Spot on Titan
Saturn's moon Prometheus, having perturbed the planet's thin F ring, continues in its orbit.
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Prometheus and Saturn's F ring
Fleeing the Scene
The southern hemisphere of Enceladus is seen in this polar stereographic map, mosaicked from the best-available Cassini and Voyager clear-filter images. The map is centered on the south pole and s...
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The southern hemisphere of Enceladus is seen in this polar stereographic map, mosaicked from the best-available Cassini and Voyager clear-filter images
Enceladus: North and South (Southern Polar Projection)
This image mosaic of Vesta's south pole is generated from dozens of individual images from the framing camera aboard NASA's Dawn spacecraft. This view is centered on the asteroid's south pole, whic...
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Map of Vesta's South Pole
Map of Vesta's South Pole
The Cassini spacecraft samples a bit of Saturn's southern hemisphere along with a spread of the planet's main rings. Working outward from the planet, the C, B, and A rings are visible in this natu...
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The Cassini spacecraft samples a bit of Saturn's southern hemisphere along with a spread of the planet's main rings.
Southern Color
Iapetus is a moon of extreme contrasts. The light and dark features give the moon a distinctive "yin and yang" appearance.
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Iapetus
Yin and Yang
Titan's Dark Terrain December 14, 2004 Full-Res: PIA06541 This view from Cassini's second close flyby of Titan on Dec. 13, 2004 shows b...
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Titan's Dark Terrain
Titan's Dark Terrain
Saturn's narrow F ring displays two bright strands, flanked by fainter material. The continuing evolution of this quirky ring is an ongoing subject of study for Cassini scientists. This view looks...
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A view of Saturn's rings
F Ring Evolution
Prometheus pulls away from an encounter with Saturn's F ring, leaving behind a reminder of its passage. Prometheus (102 kilometers, or 63 miles across) approaches closely to the F ring once during...
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Prometheus near the F ring
Hit and Run
This image from NASA's Dawn spacecraft shows the dramatic-looking crater named Haulani on Ceres.
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Dawn HAMO Image 66
Dawn HAMO Image 66
The Cassini spacecraft looks at Belet, a dark region on Saturn's largest moon, Titan. This large region on the moon has a low albedo, meaning it diffusely reflects little light. See Map of Titan -...
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Titan
Behold Belet
Moon under Saturn July 14, 2004 Full-Res: PIA05416 Saturn's captivating cloud bands display a number of interesting features in th...
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Moon under Saturn
Moon under Saturn
Cassini surveys a bright landscape coated by dark material on Iapetus. This image shows terrain in the transition region between the moon's dark leading hemisphere and its bright trailing hemispher...
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Bright landscape coated by dark material on Iapetus
Coated Craters
This map from NASA's Dawn mission shows locations of bright material on dwarf planet Ceres. There are more than 300 bright areas, called 'faculae,' on Ceres.
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Map of Ceres' Bright Spots
Map of Ceres' Bright Spots
This image shows the Minotaur V rocket that will carry NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) on a pad at NASA's Wallops Flight Facility at Wallops Island, Va.
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This image shows the Minotaur V rocket that will carry NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) on a pad at NASA's Wallops Flight Facility at Wallops Island, Va.
LADEE's Minotaur V Rocket
A cluster of mysterious bright spots on dwarf planet Ceres can be seen in this image, taken by NASA's Dawn spacecraft on June 9, 2015.
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Dawn Survey Orbit Image 11
Dawn Survey Orbit Image 11
These mosaics (6 frames each) show the appearance of the Great Red Spot in infrared light (757 nanometers at upper left), violet light (415 nanometers at upper right), and infrared light within bot...
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These mosaics (6 frames each) show the appearance of the Great Red Spot in infrared light (757 nanometers at upper left), violet light (415 nanometers at upper right), and infrared light within both a weak (732 nanometers at lower left) and a strong (886 nanometers at lower right) methane absorption band.
The Great Red Spot at Four Different Wavelengths
As NASA's Cassini spacecraft sped away from Titan following a relatively close flyby, its cameras monitored the moon's northern polar region, capturing signs of renewed cloud activity.
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Cloud activity on Titan
Northern Clouds Return to Titan
Titan's smoggy atmosphere glows brilliantly in scattered sunlight, creating a thin, gleaming crescent beyond Saturn's rings.
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Titan's smoggy atmosphere glows brilliantly in scattered sunlight, creating a thin, gleaming crescent beyond Saturn's rings.
Titan Shines Through
+ Unannotated version The southern hemisphere of Saturn's moon Mimas is seen in these polar stereographic maps, mosaicked from the best-available Cassini and Voyager images. Each map is centered ...
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The southern hemisphere of Saturn's moon Mimas is seen in these polar stereographic maps, mosaicked from the best-available Cassini and Voyager images.
Mimas Polar Maps - February 2010
Saturn and two of its moons, Tethys (above) and Dione, were photographed by Voyager 1 on November 3, 1980, from 13 million kilometers (8 million miles). The shadows of Saturn's three bright rings a...
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Color image of Saturn, its rings and two moons, Tethys and Dione.
Saturn With Tethys and Dione
This image has not been validated or calibrated. A validated/calibrated image will be archived with the NASA Planetary Data System in 2012. For more information on raw images check out our Freque...
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Enceladus
Enceladus (Raw Image 5)
Across the darkened expanse of Saturn's rings, the Cassini spacecraft spies one of the F-ring shepherd moons. Pandora (84 kilometers, or 52 miles across) orbits Saturn just beyond the outer edges...
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Saturn, the F-ring and the moon Pandora
Spotting the Shepherd

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