Shedding New Light On the Solar System: Celebrating 25 Years of Hubble Science (Part 2)

A series of images of Uranus and Neptune that were taken with the Hubble Space Telescope. The top row reveals the ice giant planets in natural colors, showing the planets as they would appear if we could see them through a telescope. The images at the bottom were taken with certain types of different […]

Cassini Finds Evidence for Hydrothermal Activity on Saturn's Moon Enceladus

Cutaway view depicting the interior of Enceladus. Water, salts, organics, and methane make their way from the hydrothermal vents on the ocean bottom to the surface through cracks in the icy crust, erupting as geysers. Image Credit: NASA/JPL

The deep oceans on Earth are teeming with life, despite the cold and darkness, thanks to […]

'Life Not As We Know It': New Research Shows How Exotic Biology May Be Possible on Titan

Illustration of methane rainfall and lake on Titan. New research suggests exotic forms of life could be possible in this alien environment. Image Credit: Mark Garlick (Space-art.co.uk)/APOD

The search for life elsewhere has long focused on what we are most familiar with on Earth—in other words, “life as we know it,” or organisms which […]

Scientists Debate How to Search for Life on Europa in New Mission

Jupiter’s ice-covered moon Europa hides a water ocean beneath its surface. A return mission is now planned to help search for evidence of life there. Photo Credit: NASA/JPL

Jupiter’s moon Europa, with its subsurface ocean, is considered by many to be the best place in the Solar System to search for extraterrestrial life. With NASA […]

Getting Closer! New Horizons Sees Two of Pluto's Smaller Moons for First Time

Long-exposure images taken by New Horizons between Jan. 27 and Feb. 8, 2015, showing the two tiny moons Hydra (inside yellow diamond) and Nix (inside orange diamond). Image Credit: Image credits: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

The New Horizons spacecraft, on course for a historic encounter with Pluto this summer, is […]

New Technique Provides Better, Clearer Radar Images of Titan's Amazing Surface

Radar view of Ligeia Mare, a large hydrocarbon sea on Titan. The original version is on the left and the enhanced, “despeckled” version is on the right. Image Credit: NASA/JPL-Caltech/ASI

Saturn’s largest moon Titan is a fascinating world, uniquely alien yet eerily Earth-like in many ways, with its rain, rivers, lakes, seas, and massive […]

New Horizons Sends Back New Photos of Pluto on Clyde Tombaugh's Birthday

Two new images of Pluto and its largest moon Charon, taken on Jan. 25 and Jan. 27, 2015 by the New Horizons spacecraft. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

As the New Horizons spacecraft continues speeding toward its rendezvous with Pluto this summer, it has just sent back new photos […]

Massive Alien Ring System Is Much Larger Than Saturn's—And May Contain Exomoons

Artist’s conception of the ring system circling the young giant planet (or brown dwarf) J1407b. Image Credit: Ron Miller

Astronomers today announced yet another mind-boggling finding: a ring system which orbits a distant giant planet has been found to be much larger and more massive than Saturn’s ring system, the best known example in our own […]

Water on Vesta? Gullies Suggest Wet Debris Flows in the Past, Study Finds

Image of curved gullies and fan-shaped deposits in Cornelia crater on Vesta. Image Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

The Dawn spacecraft is now very close to the dwarf planet Ceres, but there are some interesting new findings from its previous visit to the asteroid Vesta. Curved gullies on its surface suggest that small amounts of water may […]

Two New Exoplanet Findings Bring Us Closer to Discovering Other Earth-Like Worlds

Artist’s conception of a super-Earth ocean world, with another gas giant planet rising over the horizon. Image Credit: David A. Aguilar/CfA

When it comes to exoplanets, the most exciting for many people are, of course, the ones which may be the most Earth-like, since these are regarded as the most likely to possibly support some form […]