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Crescent Neptune and Triton NASA / JPL-Caltech / Justin Cowart

Crescent Neptune and Triton This OGV (orange, green, and violet filters) color image of Neptune and Triton was captured by Voyager 2 as it departed the Neptune system. This image was taken around 735 UT on August

Neptune and Triton, as Voyager 2 was leaving solar system forever. Sept 3, 1989, a week after closest approach.

Neptune and Triton, as Voyager 2 was leaving solar system forever. Sept a week after closest approach.

The scene features Titan, largest, and Dione, third largest moon of Saturn.  Pale Dione is about 1,100 kilometers across and orbits over 300,000 kilometers from the visible outer edge of the A ring. At 5,150 kilometers across, Titan is about 2.3 million kilometers from Cassini, while Dione is 3.2 million kilometers away.

Orbiting in the plane of Saturn's rings, Saturnian moons have a perpetual ringside view of the gorgeous gas giant planet. - Which doesn't matter because only Cassini can see it.

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A photo from Cassini on May shows the arc of Saturn's G ring. The ring, about miles from the planet.

Three of Saturn's moons -- Tethys, Enceladus and Mimas -- are captured in this group photo from NASA's Cassini spacecraft.

Three Times the Fun

NASA craft captures a trio of moons amid Saturn’s. NASA craft captures a trio of moons amid Saturn’s rings…

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Chandra Observatory on

NGC 2146, classified as a barred spiral galaxy, is undergoing massive amounts of star formation. In addition of being barred, NGC 2146 is also considered a starburst galaxy due to its intense amount of star formation. Though it is smaller than the Milky Way, its rate of star production is orders of magnitude grater than that of the Milky Way. Credit: NASA/Harvard/Hubble/NED/ESA

NGC classified as a barred spiral galaxy, is undergoing massive amounts of star formation. In addition of being barred, NGC 2146 is also considered a starburst galaxy due to its intense amount of star formation. Though it is smaller than the Milky W

NASA Mars Rover Curiosity Sees 'Evening Star' Earth | NASA

NASA's Mars rover Curiosity took this photo of Earth from the surface of Mars on Jan. 40 minutes after local sunset, using the left-eye camera on its mast. The inset shows a zoomed-in view of the Earth and moon in the image.

Rings Occulting Titan

New “Organic Building Blocks” Found In Titan’s Atmosphere

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