The countdown begins for skygazers as Comet Tsuchinshan-Atlas is expected to vanish from the night sky by early November, according to NASA.
Discovered in 2023, this comet originated from beyond the Solar System and Kuiper Belt, marking its first appearance in the inner Solar System in human history.
The comet made its closest approach to Earth around October 12, providing spectacular displays worldwide. It is now moving away from visibility for potentially the last time in our lifetimes.
Astronomers estimate it could take another 80,000 years before the comet becomes visible again, assuming it survives its journey through the solar system.
Skygazers in the Northern Hemisphere can still catch a glimpse of the comet over the next few days, just after sunset. NASA's Gary Johnston indicated that on October 23, the comet will be about 30 degrees above the western horizon, rising an additional two degrees daily until it fades from sight.
By the end of October, the brightness of Comet Tsuchinshan-Atlas is expected to diminish by about a magnitude of 6, making it barely visible to the naked eye under optimal conditions. Binoculars may enhance visibility.
Officially designated C/2023 A3 Tsuchinshan-ATLAS, the comet was identified by the Tsuchinshan Observatory in China and the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in South Africa, from which it derives its name.