Snowstorm on Hartley 2
Publiée le 2010-11-28
Snowstorm on Hartley 2
During its flyby on November 4, 2010 by the Deep Impact spacecraft, a phenomenon hitherto unknown was observed in the environment of the comet Hartley 2. This is a huge spherical cloud of snow made of water ice. The snowball could reach the size of a basketball. They consist of tiny grains of water ice of about 1 micron in size, clumped together.

Dry ice is solid CO2 jets are carrying chunks of snowy water ice along for the ride. However "it's snowing up, not down" !

Puce NASA Site
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