Stargazers, get excited! Comet Tsuchinshan-ATLAS, also known as C/2023 A3, is lighting up the night sky, and this rare event won’t happen again for 80,000 years. Here’s everything you need to know about this incredible comet!
What Is Comet Tsuchinshan-ATLAS?
Comet Tsuchinshan-ATLAS is a long-period comet that was discovered at the Tsuchinshan Observatory in China. With its impressive return to the inner solar system every 80,000 years, it has earned the title “comet of the century.” It’s currently shining brightly at a magnitude of +0.5, making it visible to the naked eye—even from bustling cities.
NASA describes comets as “cosmic snowballs” made of frozen gases, rock, and dust. As they get closer to the Sun, they heat up, releasing gases and dust that create a glowing head and a tail that can stretch millions of miles. For Comet Tsuchinshan-ATLAS, its tail is estimated to be around 18 million miles long!
When and How to Spot the Comet
Want to catch a glimpse of this once-in-a-lifetime comet? Time is of the essence!
- Visibility Window: The comet first appeared on October 12 and will be visible through the end of the month. However, it will gradually dim and become harder to see as it moves higher in the sky and drifts away from the Sun.
- Best Viewing Tips: Tonight, October 17, might be tricky for comet watchers due to the bright light of the Hunter’s Moon, which can wash out some of the comet’s tail. NASA’s Bill Cooke suggests looking for the comet after sunset.
Where to Look
To find the comet in the Northern Hemisphere, look west about 45 minutes after sunset. It will be positioned just below and to the right of Arcturus, a bright red giant star in the constellation Boötes.
Don’t Miss This Cosmic Event!
This is your chance to witness a spectacular celestial event that won’t happen again in our lifetimes. Grab your binoculars or simply look up at the sky tonight!
