Comet Tsuchinshan-ATLAS to Grace October Skies: How and When to See It

Comet observed in Japan

A celestial spectacle is expected to grace the night sky this week as a comet passes by Earth. Comet Tsuchinshan-ATLAS will be bright enough for most people to see with the naked eye throughout October. Here’s how to ensure you don’t miss this rare sight.

What is Comet Tsuchinshan-ATLAS?

NASA describes comets as icy bodies composed of debris leftover from the formation of our solar system. As they approach the sun, they heat up, producing a glowing tail of gas and dust that can extend millions of miles. Comet Tsuchinshan-ATLAS was discovered in 2023 by observers at China’s Tsuchinshan Observatory and an ATLAS telescope in South Africa. The comet was officially named in honor of both observatories.

The comet originates from the Oort Cloud, a region on the outskirts of our solar system filled with frozen debris.

The comet made a close pass by the sun on Sept. 27, an event scientists feared it might not survive. It is now expected to come within 44 million miles of Earth.

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When and where is the best time to see Comet Tsuchinshan-ATLAS?

Peak visibility will occur on Oct. 9-10, according to . The comet will be closest to Earth on Saturday, Oct. 12, but should remain visible until the end of October.

Those in the Southern Hemisphere will have the best view of the comet, but people in the Northern Hemisphere will also be able to catch a glimpse.

NASA Bill Cooke suggests choosing a dark location shortly after nightfall—typically an hour after sunset—and looking toward the southwest.

What is the best way to view Comet Tsuchinshan-ATLAS? 

The comet should be visible to the naked eye, but using binoculars or a telescope can enhance your view. For those who prefer to enjoy the event from indoors, on Oct. 9.

Don’t miss this opportunity: following its appearance this month, the comet won’t be visible again for another 800 centuries, according to NASA. That is, if it survives the journey.