New observations from NASA's Saturn-orbiting Cassini spacecraft has revealed at least 101 individual geysers erupting from Enceladus' crust and, through careful analysis, planetary scientists have uncovered their origin. Continue reading →
Comet Siding Spring is about to make a historic near miss of the red planet -- and NASA is preparing its Martian robots for the potentially hazardous encounter. Continue reading →
A comet, that was once thought to be an asteroid, has shown its true colors and unfurled a beautifully bright tail as it makes close approach with the sun. Continue reading →
Europe’s Rosetta comet probe has revealed that its target, Comet 67P/Churyumov-Gerasimenko, has a Siamese twin, a thrilling discovery for scientists preparing for Rosetta’s August rendezvous... but it will also be a huge challenge. Continue reading →
What happens to carbon -- and other solid materials -- when the pressure is even greater, such as what exists in the cores of Jupiter, Saturn and giant planets beyond the solar system? The world's largest laser hopes to find out.
When the "Comet of the Century" died to a solar roasting last year, the world was sad. Now astronomers think they know what happened. Continue reading →
A European probe is starting to get some good looks at the comet with which it will rendezvous next month.
A year from today a NASA probe will beam back photos of Pluto's surface -- but scientists aren't entirely sure what we'll see. Continue reading →
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