Comet
Double sky phenomena over Sweden on Saturday
On Saturday evening and into the night toward Sunday, Swedes witnessed both the northern lights and Comet Lemmon across various parts of the country. The phenomena were visible unusually far south, including in Uppsala, Stockholm, and Småland. Hobby photographer Marie Larsson captured both on camera outside Markaryd.
Interstellar comet 3I/ATLAS produces water emissions from surface
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The interstellar comet 3I/ATLAS, only the third such object detected, is spewing water in the form of hydroxyl emissions. Researchers using NASA's Neil Gehrels Swift Observatory have confirmed water on its surface. This suggests a structure differing from solar system comets.