A new wonder may appear in the sky in October: Comet Lemmon (C/2025 A6) is rapidly brightening as it approaches both the Sun and Earth. It can already be seen with small telescopes and even in clear sky conditions. If all goes according to the predictions, it may soon be visible to the naked eye.
The comet was discovered on January 3 of this year at the Mount Lemmon Observatory in Arizona. It is the brightest comet observed since January of last year, when Comet ATLAS appeared. From October 22 to 28, Lemmon will become the most prominent phenomenon in the sky, appearing after sunset in the west-northwest. During this time, it will pass through the constellations of “The Shepherd” and “Ophiuchus”, being approximately 15 degrees above the horizon, visible to the naked eye or with a small telescope or magnifying glass. The brightness of the comet, according to experts, can reach a magnitude of +3.3, meaning it can be observed without any optical aid on dark, clear nights.
