Rare Comet Tsuchinshan-ATLAS Appears in Earth Skies After 80,000 Years, Best Viewing Said to be This Week

Comet Tsuchinshan-ATLAS became visible in the evening sky for Northern Hemisphere observers from October 11.

Written by Gadgets 360 Staff | Updated: 14 October 2024 13:00 IST

Rare Comet Tsuchinshan-ATLAS Appears in Earth Skies After 80,000 Years, Best Viewing Said to be This Week

Photo Credit: NASA/Matthew Dominick

Comet Tsuchinshan-ATLAS (C/2023 A3) will be visible in the evening sky

Highlights

Comet Tsuchinshan-ATLAS visible since October 11th
Look for it near bright Venus in the evening sky
Best viewing conditions to appear this week

The comet Tsuchinshan-ATLAS, also known as C/2023 A3, has become a stunning sight for observers in the Northern Hemisphere since October 11, 2024. After a long journey that began tens of thousands of years ago, this celestial body has recently passed near the Sun and is now making its way back towards Earth. It cane closest to our planet on October 12, coming within 44 million miles. However, this entire week astronomy enthusiasts can catch a sight of the comet in the evening skies. This is an excellent opportunity for skywatchers to catch a glimpse of this bright visitor.

Viewing the Comet

Astronomy enthusiasts looking to spot the comet should plan to do so shortly after sunset. On October 11, it was visible low on the western horizon, appearing just above the bright planet Venus. Bob King, contributing editor at Sky & Telescope, suggests using binoculars for a better view of this celestial phenomenon. About 40 minutes post-sunset, head to a location with an unobstructed view of the western horizon. From there, locate Venus and move about two and a half fists to the right to find the comet.

Best Days for Observation

The visibility of Tsuchinshan-ATLAS will improve significantly over the weekend. By October 12, the comet has risen higher in the sky, and it will now remain visible for a longer duration into twilight. By the evening of October 14, it will be positioned two fists above Venus for viewers in the northern United States. As the week progresses, conditions for viewing will become more favourable, even with some interference from moonlight.

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Origins of the Comet

This comet was discovered independently by teams from China's Purple Mountain Observatory and South Africa's Asteroid Terrestrial-impact Last Alert System in early 2023. Its nucleus, a solid body composed of ice and dust, originated from the distant Oort Cloud. As it approaches the Sun, the heat causes the ice to evaporate, creating a spectacular tail that can extend for millions of miles.

The comet is expected to fade and become invisible to the naked eye by the end of October, although binoculars may still reveal it into early November. Once it departs from our vicinity, it will continue its journey into the outer solar system, likely never to return.

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