We've Observed Mars for Decades, But Still Have No Big Theories

Mars geologist Phil Christensen says we're still short on understanding the red planet. "The devil continues to be in the details," he said at this week's Eighth International Conference on Mars. Astrobiologist David Des Marais said Mars research today adds up to "lots of observations but no overarching… » 7/26/14 1:00pm Saturday 1:00pm

Never-Before-Seen Photo of Europa Shows Rivers of Red Ice

The folks at JPL just published a new image of the surface of Europa – Jupiter's watery, chaotic, eruptive, and potentially life-harboring satellite. The photograph illustrates the contrast between the moon's relatively pure water ice (blue-white terrain) and its saltier, and thereby ruddier, surface ice. » 7/09/14 3:40pm 7/09/14 3:40pm

You Are Now Officially Invited to Nominate Names for Exoplanets

The International Astronomical Union (IAU), which oversees planetary nomenclature, today invited the public to submit and vote on names for recently discovered exoplanets and their parent stars. Anyone wanting to see a planet named "Gallifrey" or "Waist-Deep Cats" – today is the day you've been waiting for. » 7/09/14 10:31am 7/09/14 10:31am

The "Grand Finale" To Cassini's Tour of Saturn Sounds Pretty Damn Epic

On Monday, NASA's Cassini probe celebrated ten years of Saturnian exploration – a decade of stunning images and insights about the planet and its moons. But in late 2016, Cassini will begin the dramatic final phase of its mission – a newly annointed "Grand Finale" that will culminate with an intentional dive into… » 7/02/14 11:45am 7/02/14 11:45am