Solar System Exploration
April 13, 2016
Saturday, April 16 is National Astronomy Day. Astronomy clubs around the country hold special astronomy programs on this day and night. Events usually include solar viewing during the day and solar...
National Astronomy Day
A simplified model of Jupiter's massive magnetic field, known as a magnetosphere.
Jupiter's Magnetic Field Visualization
On July 19, 2013, in an event celebrated the world over, NASA's Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings -- and, in the ba...
The Day the Earth Smiled (with planets annotated)
This illustration shows the interior of Saturn, including its core of heavy elements (orange), liquid metallic hydrogen layer (grey), and gaseous molecular hydrogen envelope (brown).
Saturn Interior Cutaway (Illustration)
This colorized mosaic from NASA's Cassini mission shows the most complete view yet of Titan's northern land of lakes and seas. Saturn's moon Titan is the only world in our solar system other than E...
Titan's North -- With Text
+ Titanic Deluge -- Unannotated This series of images from NASA's Cassini spacecraft shows changes on the surface of Saturn's moon Titan, as the transition to northern spring brings methane rain...
Titanic Deluge -- Annotated
+ Unannotated Version This image from NASA's Cassini spacecraft shows an ancient southern sea that used to sprawl out near the south pole of Saturn's moon Titan. In an annotated version, the red...
Outline of an Ancient Sea on Titan -- Annotated
The Cassini spacecraft views Saturn with a selection of its moons in varying sizes. Saturn's largest moon, Titan, is in the center of the image. Titan is 5,150 kilometers, or 3,200 miles, across...
Moons Small to Large
The plot shows the type of data the magnetometer measures. These data were taken during Saturn orbit insertion. Cassini is measuring the three components of the magnetic field (the strength of t...
MAG Data -- Saturn Orbit Insertion
This three-frame animation from NASA's Cassini spacecraft shows the swirling clouds in a vortex spawned by a great northern storm on Saturn. The clouds are moving in a clockwise direction. These...
Vibrating Aerosol Molecules on Titan (close up)
This movie shows a concatenation of images, hotly downloaded of the telescope today, April 22, 2013. While the frame rate is constant, the movie is time-lapse but by varying degrees. Credit: NAS...
Saturn Auroras From Hubble
For Cassini's next flyby of Titan on May 12, 2007, the radar instrument was originally pointing north of where it is now pointed. Due to the discovery of probable large seas on Titan, Cassini's qui...
Cassini to Confirm if 'Caspian Sea' is Liquid-Filled
Details of the circular feature, which scientists think is an ice volcano, which could be a source of methane in Titan's atmosphere, show up at wavelengths larger than 1.3 microns (a micron is one-...
Titan Volcano in Several Infrared Wavelengths
Artist's rendition of the Pioneer 10 spacecraft at Jupiter.
Pioneer 10 at Jupiter (Artist's Concept)
This graphic shows the closest approaches, or periapses, of Cassini's final two orbital phases.The Ring-Grazing orbits are shown in gray; Grand Finale orbits are shown in blue. The orange line show...
Close Orbits: Cassini Grand Finale (Artist's Concept)
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Milestones in Cassini's final dive toward Saturn.
Milestones in Cassini's Final Dive
Full-Res Image After nearly seven years of space travel, the Cassini-Huygens spacecraft will arrive at Saturn on June 30. In a maneuver called orbit insertion, Cassini will slow itself down ...
Saturn Arrival -- A Guide to Saturn Orbit Insertion
This is an artists concept of Cassini during the Saturn Orbit Insertion (SOI) maneuver, just after the main engine has begun firing. The spacecraft is moving out of the plane of the page and to the...
Saturn Orbit Insertion
This image shows the location of Cassini's most precise measurements so far of the surface temperatures at the active "tiger stripe" fractures that cut the south polar region of Enceladus. The back...
Warm Tiger Stripes
These Voyager mission infographics put solar system distances in perspective.
Oort Cloud and Scale of the Solar System (Infographic)
Ride the Tides Through the Throat of Kraken
Titan Travel Poster
A brief explainer about the 2018 global dust storm on Mars.
Science Comic: Dust Storm on Mars
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