Dead comets and near-earth encounters

Near Earth Objects (NEOs) are asteroids or comets whose orbits sometimes bring them close to the Earth, thereby posing a potentially threat. The asteroid that struck Chelyabinsk last year was an NEO about 40 meters in diameter. ...

Image: Methane painting in the Saturn system

Why does Saturn look like it's been painted with a dark brush in this infrared image, but Dione looks untouched? Perhaps an artist with very specific tastes in palettes?

NASA sees Hurricane Loke moving north

NASA's Aqua satellite passed over Hurricane Loke as it continued moving north in the Central Pacific early on August 25.

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