Io in Eclipse

Where is the edge of the solar system? The answer is not so simple.

This is a compilation of the Saturn hexagon movies released on Dec. 5, 2013.

This video describes a computer model that proposes a flow vortex in Saturn's upper atmosphere or ionosphere can explain periodic signatures observed by NASA's Cassini spacecraft in Saturn's magnet...

Welcome to the Scientist for a Day 2018-2019 essay contest.

Orange and white stripes slide against each other, and huge oval storms  gyrate in the NASA's Cassini spacecraft's first color movie clip of Jupiter.  

Clara, Sugar Plum Fairy, move aside. Saturn's moons give Tchaikovsky's classic ballet, "The Nutcracker," a graceful new spin in this video compiled from some 61 images taken by the Cassini spacecra...

  Take a virtual ride with Voyager 1 and 2 past Jupiter, Saturn, Uranus and Neptune.

Since the 1960’s, scientists have suspected that frozen water could survive in cold, dark craters at the Moon’s poles. 

As Huygens descends Titan's atmosphere, Cassini will record the data from 72,000 kilometers (about 44,700 miles).

An aurora, shining high above the northern part of Saturn, moves from the night side to the day side of the planet in this movie recorded by Cassini.

This visualization shows the orbits of NASA-related near-Earth science missions that are considered operational as of March 2017. 

This short movie shows the view of Kuiper Belt object 2014 MU69 (nicknamed Ultima Thule) as seen by NASA's New Horizons spacecraft from Dec. 7, 2018 to Jan. 1, 2019. During the approach, Ultima Thu...

Keeping a close watch on the outer portion of Saturn's B ring, NASA's Cassini spacecraft records the complex inward and outward movement of the edge of the ring.

This image shows that NASA's Dawn mission detected abundances of hydrogen in a wide swath around the equator of the giant asteroid Vesta. The hydrogen probably exists in the form of hydroxyl or wat...

On unexplored worlds, the sound of science is a harmonious melody of chimes, clicks and mechanical whirrs.

As NASA marks the 50th anniversary of the Apollo 11 Moon landing, here are five things to know about the Moon that you can share with others.

Clouds move above Titan's large methane lakes and seas near the moon's north pole in this movie made from images taken by NASA's Cassini spacecraft.

Go, Atlas. Go, Centaur. Go, InSight! NASA's InSight mission launched from Vandenberg Air Force Base for Mars on May 5, 2018—the first interplanetary launch from the West Coast. 

In this movie, strung together from a series of images provided by the framing camera on NASA's Dawn spacecraft, we see a full rotation of Vesta, which occurs over the course of roughly five hours. 

  After decades of exploration, Voyager 1 reaches a historic milestone for mankind, interstellar space.

Mark Hofstadter describes the lure of science -- of discovering something new -- and his path to becoming a planetary scientist.

Change is detected on Saturn’s moon Titan, in these three composite images from data taken during flybys in October 2005, January 2006 and March 2006 by NASA’s Cassini spacecraft.

This artist's concept shows "tides" on Titan raised by Saturn's gravity, as detected by NASA's Cassini spacecraft.

Amateur video: Follow the Cassini spacecraft during its journey to and near Saturn.

This life-like movie sequence captures Saturn's rings during a ring plane crossing--which Cassini makes twice per orbit--from the spacecraft's point of view.