Cassini Completes Orbital Maneuver
NASA's Cassini spacecraft completed a 51-minute engine burn that raised its orbit away from Saturn. When it first arrived at…
Martian Crater With Dunes
This image of a Martian crater was taken by the European Space Agency's Mars Express spacecraft in May, 2004. The…
Small Telescope Finds a Huge Planet
Planet hunting has traditionally only been possible with very large telescopes, capable of detecting tiny changes around distant stars which…
Double Jets Around Exploded Star
This is a detailed image of an exploded star called Cassiopeia A, taken by the Chandra X-Ray Observatory. The space-based…
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…