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Diagram shows K1’s path. With Sun at center, nearly circular orbits of Mercury, Venus, Earth, and Mars appear against black background. In sharp contrast is K1’s tight parabolic curve, marked by solid, light blue curving line illustrating how K1 swooped toward the Sun from above. It curved around the Sun, coming closest inside Mercury’s orbit, and continued its outbound journey. After passing the Sun, as K1 approached Mercury’s orbit, NASA’s Hubble Space Telescope captured the inset image of comet. Five, bright, fuzzy, blue, comet-like objects streak diagonally from upper left to lower right of a black box outlined in white. At outside top of box is label C/2025 K1 (ATLAS). Outside the right side of box is a white, horizontal line labeled November 10, 2025. To right of this line is a perpendicular, vertical line pointing to a white glow just inside Mercury’s orbit that illustrates K1. To left of this glow, the comet’s outbound path is marked by a dashed gray line that continues off the image.

Comet C/2025 K1 Orbit Illustration

This diagram shows the path Comet C/2025 K1 (ATLAS), or K1, took as it swung past the Sun and began its journey out of the solar system. NASA’s Hubble Space Telescope captured the inset image of the fragmenting comet just a month after K1’s closest approach to the Sun.

Image Credit: Illustration: NASA, ESA, Ralf Crawford (STScI)
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Image CreditIllustration: NASA, ESA, Ralf Crawford (STScI)
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