Pluto's Large Nitrogen Ice 'Sea' Probably Formed from Giant Impact, Scientists Say

The vast ice plains of Sputnik Planum on Pluto. Image Credit: NASA/JHUAPL/SwRI

The vast ice plains of Sputnik Planum on Pluto. The basin, now filled with nitrogen ice, was probably created by a huge impact. Photo Credit: NASA/JHUAPL/SwRI

Instead of being little more than a frozen and unchanging rocky iceball, Pluto has been revealed to be a complex and dynamic little world, with mountains, valleys, vast icy […]

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 […]

Stunning New Images of Pluto's Surface Are Best Yet from New Horizons Mission

New high-resolution image of Pluto from New Horizons, showing jumbled blocks in the water-ice crust. Image Credit: NASA/JHUAPL/SwRI

New high-resolution image of Pluto from New Horizons, showing jumbled blocks in the water-ice crust, which border the smooth nitrogen-ice plains. Image Credit: NASA/JHUAPL/SwRI

The New Horizons mission has already sent back phenomenal images and data from Pluto, but it keeps getting better. New images released today are the first in a series of […]

A Complex World: Pluto Discoveries Include Possible Ice Volcanoes, Varied Geology, and Weird Spinning Moons

Slide from the DPS meeting showing possible ice volcanoes on Pluto. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

Slide from the DPS meeting showing possible ice volcanoes on Pluto. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

Pluto is a small, cold world, but it is also turning out to be one of the most fascinating places in our Solar System – as reported today at the American Astronomical Society’s Division […]

New Horizons Conducts Final Course Correction for New Year's Day Flyby of Next KBO in 2019 

New Horizons has completed the four course corrections needed to send it on its way to its next target in the Kuiper Belt, 2014 MU69. Image Credit: NASA/JHUAPL/SwRI

New Horizons has completed the four course corrections needed to send it on its way to its next target in the Kuiper Belt, 2014 MU69. Image Credit: NASA/JHUAPL/SwRI

After having completed a wildly successful flyby of Pluto and its moons, the New Horizons spacecraft was given a new target, much farther out in the […]

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 […]

New Horizons Changes Course for Flyby of First Post-Pluto Destination on New Year's Day 2019

New Horizons has sped past the Pluto system and is now on its way to its next target in the Kuiper Belt. NASA/JHUAPL/SwRI

New Horizons has sped past the Pluto system and is now on its way to its next target in the Kuiper Belt, 2014 MU69. Image Credit: NASA/JHUAPL/SwRI

After having completed its successful encounter with Pluto and its moons last July, the New Horizons spacecraft is now setting its sights on its next target much […]

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 […]

A Whole New World: Pluto Discoveries Published in New 'Science' Research Paper

High-resolution view of Pluto from New Horizons. The large flat area of ice is the western lobe of the "heart" feature. Image Credit: NASA/JHUAPL/SwRI

High-resolution view of Pluto from New Horizons. The large smoother area of ice is the western lobe of the “heart” feature. Image Credit: NASA/JHUAPL/SwRI

It has been three months since the historic close flyby of Pluto by New Horizons, and new discoveries have been coming in quickly about this previously little-known world. The first […]