NASA's InSight Lander Arrives at Vandenberg Air Force Base, Prepares for Launch to Mars

A crate containing the InSight lander is loaded onto a C-17 cargo aircraft at Buckley Air Force Base, Denver. Image Credit: NASA/JPL-Caltech/Lockheed Martin

Update: Just after this article was published, it was announced that there may be a launch delay due to the problem with a vacuum leak in the seismometer instrument. Today, […]

Cassini Prepares for Last Epic Flyby of Saturn's Ocean Moon Enceladus

Cassini’s final close flyby of Enceladus will be on Dec. 19, 2015. Image Credit: NASA/JPL-Caltech

The Cassini spacecraft’s discoveries about the tiny moon Enceladus have been some of the most exciting of the entire mission at Saturn. What was once thought to likely be little more than a frozen ice world has turned […]

Vacuum Leak Discovered in Key Science Instrument for InSight Mission to Mars

Artist’s conception of the InSight lander on Mars. The SEIS instrument is the dome-shaped object in the foreground. Image Credit: NASA/JPL-Caltech

One of the science instruments being installed on the InSight lander is experiencing a vacuum leak, according to an update posted Dec. 3 on the JPL website. The leak is in the […]

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 […]

Cassini Completes Epic Flyby Through Geysers of Enceladus, Sends Back Stunning New Images

View of Enceladus and Saturn’s rings during the flyby on Oct. 28, 2015, at a distance of 106,000 miles (171,000 kilometers) from Enceladus. Image Credit: NASA/JPL-Caltech/Space Science Institute

The Cassini spacecraft has successfully completed its deepest dive through the water vapor geysers of Enceladus and is now sending back some fantastic images of […]

Sampling an Alien Ocean: Cassini Prepares for Deep Dive Through Enceladus' Geysers on Wednesday

Artist’s conception of Cassini making a close flyby of Enceladus and its water vapor plumes. Image Credit: NASA/JPL

This coming Wednesday, Oct. 28, 2015, the Cassini spacecraft will make a historic close flyby (dubbed “E21”) of Saturn’s tiny icy moon Enceladus, not only passing very close to the surface, but also making the […]

Cassini Sends Back Spectacular New Images of the North Pole Region of Enceladus

New high-resolution view of the north polar region on Enceladus, showing a cratered surface crisscrossed by many cracks. Image Credit: NASA/JPL-Caltech/Space Science Institute

The Cassini spacecraft has just successfully completed the first of three final close flybys of Saturn’s moon Enceladus, and has sent back some spectacular images of the northern regions of […]

Cassini Begins Series of Three Close Flybys of Saturn's Water Moon Enceladus

Illustration of Cassini’s “E-20” flyby of Enceladus, which will provide new, detailed views of the moon’s north polar region. Image Credit: NASA/JPL-Caltech

Starting today, the Cassini spacecraft is making the first of three scheduled close flybys of the moon Enceladus, which will provide the first good look at the north polar region of […]

New Evidence From Cassini Indicates Saturn's Moon Enceladus Has Global Subsurface Ocean

Diagram depicting the interior of Enceladus, with the global ocean between the ice crust above and the rocky core below. The jets of water vapor erupt from fissures at the south pole. Image Credit: NASA/JPL-Caltech

Along with Jupiter’s moon Europa, Saturn’s moon Enceladus is considered to be one of the best places to […]

'Old Earths': The Search for Ancient and Habitable (But Dying) Exoplanets

Illustration depicting the life cycle of Sun-like stars. Billions of years from now, our own Sun will expand into a red giant star, scorching any life that exists. Image Credit: ESO/M. Kornmesser

Researchers at Cornell University are taking a new approach to the search for alien life: looking for habitable planets older than […]