Cassini Completes Last Flyby of Titan and First Dive Between Saturn and Rings in 'Grand Finale'

Raw image from Cassini’s last-ever flyby of Titan, taken on April 21, 2017. Photo Credit: NASA/JPL-Caltech/Space Science Institute

NASA’s Cassini spacecraft has now officially entered the last phase of its mission – the “Grand Finale,” with the last-ever close flyby of Titan and the first of 22 final orbits which will take the spacecraft […]

Nearing the End: Cassini Prepares for Spectacular 'Grand Finale' Orbits at Saturn

Cassini is now entering the Grand Finale phase of the mission, which will end on Sept. 15, 2017, after the spacecraft plunges between the planet and rings 22 times. Image Credit: NASA/JPL-Caltech

NASA’s Cassini mission to Saturn has been one of the most successful and awe-inspiring ever, studying the giant ringed planet and its […]

Cassini Returns Stunning New Close-Up Images of Saturn's 'Ravioli' Moon and Rings

New image of Saturn’s tiny moon Pan, which orbits inside the Encke Gap of Saturn’s rings. A thin “skirt” or ridge of material surrounds the moon’s equator, giving it a “ravioli” or “dumpling” appearance. Photo Credit: NASA/JPL-Caltech/Space Science Institute/Ian Regan

NASA’s Cassini mission may be entering its last several months now, but that doesn’t […]

Cassini Sends Back Spectacular New Images from First Ring-Grazing Orbit at Saturn

Saturn’s northern hemisphere up close: new image taken by Cassini on Dec. 3, 2016, showing small details in the turbulent atmosphere, including one corner of the “hexagon” with central cyclone. It was taken at a distance of about 240,000 miles (390,000 kilometers) from Saturn. Photo Credit: NASA/JPL-Caltech/Space Science Institute

The Cassini spacecraft has successfully […]

Cassini Spacecraft Prepares for Incredible 'Ring-Grazing Orbits' at Saturn

View from Cassini of Saturn and its main rings. Photo Credit: NASA/JPL-Caltech/Space Science Institute

The Cassini mission to Saturn has been one of the most successful planetary missions ever, revealing the ringed giant and its moons as never before. Sadly, that mission is scheduled to end Sept. 15, 2017, and in preparation the spacecraft […]

A Moon Falling Apart: Grooves on Phobos Are a Sign of its Eventual Catastrophic Fate

The unusual grooves on Phobos’ surface, such as those on the left side of this image, are now thought to be caused by tidal stress. The large crater Stickney is in the upper portion of the image. Image Credit: NASA/JPL-Caltech/University of Arizona

Phobos is the largest of Mars’ two tiny moons, but 50 million […]

Back to the Ice Giants: Proposed New Mission Would Re-Visit Uranus or Neptune (or Both!)

Uranus (left) and Neptune (right). These two ice giants and their many moons are awaiting further exploration. Image Credit: NASA

The outer Solar System has been a busy place lately, with the ongoing Cassini mission at Saturn and New Horizons’ recent spectacular flyby of Pluto. Literally in-between those two worlds, however, it has been […]

After Glitch, New Horizons to Resume Science Operations July 7, Before Pluto Encounter

The newest maps of Pluto, as of two weeks before closest approach. A black and white reflectance map has been combined with a natural color map to produce the map in the center. Four dark patches of about the same size and spacing can also be seen in these and other recent images. Image […]

On the Final Path: New Horizons Executes Last Course Correction Maneuver Prior to Pluto Closest Approach

With just under two weeks remaining before New Horizons flies through the Pluto system on July 14, the spacecraft has successfuly executed its last scheduled course correction maneuver, which put it right on top of the mission’s intended trajectory through the Pluto system. Image Credit: Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute (JHUAPL/SwRI)

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Saturn's Massive Phoebe Ring Even Larger Than Previously Thought

Image of the Phoebe ring taken in 2009, overlaid in tan colors. The ring is much larger than Saturn’s other more visible rings and is also tilted with respect to the other rings. Image Credit: NASA/JPL/U. Virginia

Saturn is truly the “Lord of the Rings” and one of the most majestic places in the […]