Comet Lemmon will cut through the neck of a cosmic serpent on the night of Oct. 26, when it passes through the stars of the constellation Serpens Caput ahead of its close approach to the sun in early November.

Magnitude is the scale used to measure the apparent brightness of objects in the night sky. The lower the number, the brighter the object! For context, the brightest stars are around Mag +1, while a full moon is -13 and the sun is -27.

The wandering comet Comet C/2025 A6 (Lemmon) was discovered on Jan. 3 earlier this year and has been brightening dramatically over the course of its subsequent headlong dive into the inner solar system. The brightening occurred as an increase in heat radiation from the sun vaporized icy materials embedded in its structure, creating a gaseous shell ar

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