For quite a while, an asteroid named Phaethon has presented astronomers with something of F a conundrum. When it passes close to the Sun during its orbit, a long tail of material can be seen leaving the rock. However, if Phaethon’s tail is the stuff of usual comets – ice and carbon dioxide – then it should be visible when the comet is as far away as Jupiter, too. But it’s not.
ASTEROID PHAETHON’S MYSTERIOUS TAIL MAY FINALLY HAVE AN EXPLANATION
Dec 28, 2023
3 minutes
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