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Rosetta unravels formation of sunrise jets
The atmosphere of Rosetta's comet 67P/Churyumov-Gerasimenko is far from homogeneous. In addition to sudden outbursts of gas and dust, daily recurring phenomena at sunrise can be observed. In these, evaporating gas and entrained dust are concentrated to form jet-like structures. A new study, led by the Max Planck Institute for Solar System Research (MPS) in Germany and published in the journal Nature Astronomy, now identifies the rugged, duck-shaped structure of the comet as the main cause of these jets. Not only do concave regions collimate gas and dust emissions similar to an optical lens, the complex topography also provide some areas of the surface with more sunlight than others.
Scientists introduce cosmochemical model for Pluto formation
Drilling success: Curiosity is collecting Mars rocks
Problem with new US weather satellite could affect pictures (Update)
First light for the storm hunter
New study details geological process behind Titan's dunes
Team tests feasibility of EmDrive and Mach Effect Thrusters