Experience the brilliance of comet C/2023 A3, visible nightly this October, with its closest approach to Earth on October 12.

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Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete more of their gas and dust. Consequently, they don’t typically emit as much ...

I/ATLAS is the fastest comet ever recorded and its interstellar! NASA's Goddard Space Flight Center explains. Credit: NASA's ...