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

Cassini's final close flyby of Enceladus will be on Dec. 18, 2015. Image Credit: NASA/JPL-Caltech

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 out […]

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

View of Enceladus and Saturn's rings during the flyby. Image Credit: NASA/JPL-Caltech/Space Science Institute

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 the […]

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

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 deepest dive […]

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

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 this […]

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

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 the […]

Early Mars May Have Been Cold and Icy Rather Than Warm, According to New Study

Conceptual image of the two competing warm or cold models of early Mars. Image Credit: Robin D. Wordsworth

Conceptual image of the two competing warm and cold models of early Mars. Image Credit: Robin D. Wordsworth

The debate over whether Mars used to be warmer and wetter or colder and wetter earlier in its history has been a long and contentious one. Now, a new study suggests it may be the latter, that […]

Rosetta Team Focusing on Upcoming Comet and Lander Science, Planning Ultra Close Flyby

From the location where it came to rest after bounces, the Philae lander of the European Space Agency’s Rosetta mission captured this view of a cliff on the nucleus of comet 67P/Churyumov-Gerasimenko. The feature is called “Perihelion Cliff.” The image is from the lander’s CIVA camera. Credit: ESA/Rosetta/Philae/CIVA

The team guiding Europe’s history-making Rosetta […]

NASA Curiosity Rover Discovers Methane and Organics on Mars

This image illustrates possible ways methane might be added to Mars’ atmosphere (sources) and removed from the atmosphere (sinks). NASA’s Curiosity Mars rover has detected fluctuations in methane concentration in the atmosphere, implying both types of activity occur on modern Mars. Credit: NASA/JPL-Caltech/SAM-GSFC/Univ. of Michigan

NASA’s Curiosity rover has made a double dose of […]

Early Results From NASA’s MAVEN Mars Orbiter Provide Clues Pointing to Atmospheric Loss

MAVEN is observing the upper atmosphere of Mars to help understand climate change on the planet. MAVEN entered its science phase on Nov. 16, 2014. Image Credit: NASA/GSFC

NASA’s newest Mars orbiter, MAVEN, has begun its unprecedented mission to unlock the mysteries of Mars’ climate history and determine why the Red Planet lost most […]

New Findings Put Curiosity's Abilities to the Test

The Rocknest has enabled Curiosity to put its remarkable skills and equally remarkable instrument toolkit to good use. There may not yet be evidence of organic life on Mars, but Curiosity is a living thing: explorer, scientist, lab technician, offroad trucker, and Twitter celebrity. Photo Credit: NASA

No little green men, no Decepticons, and […]