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A bright blue arc appears in the darkness of space. The comet streaks upward, almost perpendicular.

Ancient Comet Makes Appearance

Comet C/2023 A3 (Tsuchinshan-ATLAS) was about 44 million miles away from Earth in this photograph from the International Space Station as it orbited 272 miles above the South Pacific Ocean southeast of New Zealand just before sunrise on Sept. 28, 2024.

Image Credit: NASA/Matthew Dominick

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