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 far more rapidly than expected as it approaches perihelion, its closest point to the Sun.
Due to its position almost directly behind the Sun for the past month, ground-based observations have been nearly impossible. However, astronomers have been using space-based observatories to track the comet.
Researchers Qicheng Zhang and Karl Battams used solar-monitoring satellites, including STEREO-A, SOHO, and GOES-19, to capture the comet's dramatic transformation.
Related: Strange Green Glow From Interstellar Comet 3I/ATLAS Has Scientists Puzzled
Astronomers are surprised by the comet's blue shine, making this a significant discovery.
Author's summary: Comet 3I/ATLAS brightens rapidly.
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