Visual Astronomy Display: December 2022

Highlights:

• See the new Webb images of a “fiery hourglass” protostar;
• Learn why we might need to change the duration of a “second”;
• Fermilab reviews the history of physicists calculating the speed of gravity;
• SciShow breaks down why some astronomers “listen” to space;
• PBS Space Time asks: what if humanity is among the first spacefaring civilizations?

Extras:

• Watch a livestream of aurora borealis from Fairbanks, Alaska. (2:50:12)

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