News tagged with northern hemisphere

How a sunset comet came to be

(Phys.org) —For a comet, visiting the sun is risky business. Fierce solar heat vaporizes gases long frozen in the fragile nucleus, breaking up some comets and completely destroying others.

dateMar 18, 2013 in Space Exploration
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Saturn to shed its spooky spokes for summer

As Saturn steadily moves along its 29.7-year-long orbit toward summertime in its northern hemisphere NASA's Cassini spacecraft is along for the ride, giving astronomers a front-row seat to seasonal changes taking place on ...

dateMar 13, 2013 in Space Exploration
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