Solar System
Clay Deposits Don’t Prove Existence of Ancient Martian Lakes
HiRISE image of branching features in the floor of Antoniadi Crater thought to contain clay material. (NASA/JPL/University of Arizona) In…
Is Triton Hiding an Underground Ocean?
Voyager 2 mosaic of Neptune's largest moon, Triton (NASA) At 1,680 miles (2,700 km) across, the frigid and wrinkled Triton is Neptune’s…
What Has the Kuiper Belt Taught Us About The Solar System?
Over 4 billion miles (6.7 billion km) from the Sun, the Kuiper Belt is a vast zone of frozen worlds…
Winds of Change at the Edge of the Solar System
As the venerable Voyager 1 spacecraft hurtles ever outward, breaking through the very borders of our solar system at staggering…
Beneath the Mask, Titan looks Surprisingly Smooth and Youthful
Caption: Images from the Cassini mission show methane river networks draining into lakes in Titan's north polar region. Credit: NASA/JPL/USG…
Why Doesn’t Earth Have More Water?
Water, water everywhere... Coleridge's shipbound ancient mariners were plagued by a lack of water while surrounded by a sea of…
Fifth Moon Found Around Pluto
This just in! Astronomers working with the Hubble Space Telescope have spotted a new moon around distant Pluto, bringing the…
The Return of the Rings!
Now that Cassini has gone off on a new trajectory taking it above and below the equatorial plane of Saturn,…
An Epic Crater Called Odysseus
On June 28 NASA's Cassini spacecraft passed by Tethys, a 1,062-kilometer (662-mile) -wide moon of Saturn that's made almost entirely…
Titan’s Tides Suggest a Subsurface Sea
Saturn's hazy Titan is now on the short list of moons that likely harbor a subsurface ocean of water, based…