1983-discovered comet Phaethon is the source of the Geminid meteor shower, exhibiting unique gas emission cycles due to heated iron sulfide minerals.

Phaethon, a "rock comet" discovered in 1983, is the source of the Geminid meteor shower. It exhibits comet-like behavior by emitting gases without releasing dust, puzzling researchers. A study suggests that heated iron sulfide minerals break down into gases like sulfur dioxide, which accumulate beneath its surface. This gas emission cycle repeats with Phaethon's rotation. Findings will inform the Japanese Space Agency's upcoming Destiny+ mission to further investigate this unique object.

September 02, 2024
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