Interstellar Comet 3I/ATLAS's Blue Shine Is Surprising Astronomers
Comet 3I/ATLAS, the third known visitor from beyond our Solar System, has been brightening rapidly as it approaches perihelion, its closest point to the Sun.
Ground-based observations were nearly impossible due to the comet's position behind the Sun, so astronomers used space-based observatories and solar-monitoring satellites to track it.
Researchers Qicheng Zhang and Karl Battams used instruments aboard STEREO-A, SOHO, and GOES-19 to capture the comet's transformation.
Related: Strange Green Glow From Interstellar Comet 3I/ATLAS Has Scientists Puzzled
Astronomers are surprised by the comet's blue shine as it approaches the Sun.
Author's summary: Comet 3I/ATLAS surprises astronomers with rapid brightening.
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