Gone for a Week… Now I’m Back
In case you hadn't noticed, I didn't update Universe Today all last week. I was just in the process of…
More Evidence for Past Water on Mars
NASA's Spirit rover has dug up plenty of evidence on slopes of "Columbia Hills" that water once covered the area.…
Ganymede’s Lumpy Interior
Scientists have used data from NASA's Galileo spacecraft to uncover strange rocky lumps underneath Ganymede's icy shell. One theory is…
Helicopter Will Catch Samples from Genesis
NASA's Genesis spacecraft has nearly returned to Earth with its precious cargo of particles from the solar wind. On September…
Estimating the Age of the Milky Way
Here's a question that's surprisingly difficult to answer: how old is the Milky Way? A team of astronomers have used…
Rosetta Can “Smell” a Comet
One experiment on board the European Space Agency's Rosetta spacecraft will let it cook particles from a comet in a…
Eroded Valleys on Mars
This image was taken by the European Space Agency's Mars Express spacecraft, and shows a system of outflow channels called…
Cassini Discovers Two New Moons
Cassini has uncovered two new mini-moons of Saturn, orbiting between Mimas and Enceladus. The new moons have been dubbed S/2004…
Chandra Sees Clouds Coming Together
A new image of Abell 2125, taken by the Chandra X-Ray Observatory, shows several intergalactic clouds of hot gas in…
Evidence for Planets Around a Young Star
An astronomer from the University of Hawaii has captured a detailed image of a dust disk around a new star;…