Cassini finds alien version of ‘Nile River’ on Titan

Titan’s version of the Nile River stretches across this radar image; part of the Ligeia Mare sea is also visible on the right side of the image. Credit: NASA / JPL-Caltech / ASI

Want to go river rafting on Titan? The largest moon of Saturn is the only other place in the solar system known to have rivers, lakes and seas on its surface. Appearance-wise, they are eerily similar to their earthly counterparts, but are composed of liquid methane instead of water, in Titan’s extremely cold environment. Now, the Cassini spacecraft has found the largest Titanian river system yet, similar to the Nile River on Earth, as announced on December 12, 2012.

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Mystery gullies discovered on asteroid Vesta

Gullies in the crater Cornelia on Vesta. Credit: NASA / JPL-Caltech / UCLA/MPS / DLR / IDA

The Dawn spacecraft left behind the giant asteroid Vesta last September, and is now en route to the even bigger dwarf planet Ceres, but scientists are still busy studying all of the data that was sent back to Earth while it was orbiting Vesta for over a year. And as often happens while exploring these new worlds, they have made a surprising discovery: long, sinuous gullies on the walls of geologically younger craters.

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Curiosity finds odd ‘bubbles’

One of the larger and most prominent “bubbles.” Credit: NASA / JPL

Having just finished its sampling of the soil at Rocknest, Curiosity is now moving farther north-east into the Glenelg area, and has come across another interesting “curiosity” – small, usually roughly circular ring-like features on some of the surrounding bedrock slabs which look like shallow depressions with a raised rim, kind of like frothy “bubbles” which have popped.

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