When you buy through links on our articles, Future and its syndication partners may earn a commission.
Eager skywatchers will soon have front-row seats to a rare cosmic encounter as interstellar comet 3I/ATLAS makes its closest approach to Earth, and you can watch it happen live online.
The Virtual Telescope Project will host a free livestream starting at 11 p.m. EST on Dec. 18 (0400 GMT on Dec. 19), sharing real-time telescope views of comet 3I/ATLAS captured by its robotic observatories in Manciano, Italy, weather permitting.
Comet 3I/ATLAS will make its closest approach to Earth at 1 a.m. EST (0600 GMT) on Dec. 19. At that time, it will be about 1.8 astronomical units away — roughly 168 million miles (270 million kilometers), nearly twice the average distance between Earth and the sun.
Discovered in July 2025 by the ATLAS (Asteroid Terrestrial-impact Last Alert System) survey, 3I/ATLAS quickly captured the attention of both scientists and the public. It is only the third confirmed interstellar object ever detected passing through our solar system, following 1I/'Oumuamua in 2017 and 2I/Borisov in 2019. Researchers are especially interested in its composition and behavior, which could offer rare clues about how planetary systems form around other stars.
The comet is too faint to be seen with the naked eye and will be challenging even for small backyard telescopes. Under dark skies, observers with a telescope of 8 inches or larger may be able to spot it as a faint, fuzzy patch of light. If you're unable to look for the comet in person, you can sit back, relax and enjoy the view from the comfort of your own home via the livestream.
The Appearance of Experience: Embracing the Reduced Portage Horse- You finally got a doctor's appointment. Here's how to get the most out of it
- Vote in favor of Your Number one BWM Vehicles
- Alleged Huione Group Money Laundering Boss Extradited to China
- Step by step instructions to Contrast Lab Precious stones and Normal Jewels
- First Phosphate advances battery-grade phosphate project as analysts highlight strategic Federal support
- The Delight of Perusing: Book Proposals for Each Class
- CDC pauses dozens of types of lab testing during evaluation and in wake of downsizing
- Former IRGC child executioner tells ‘Post’ how he became devout Christian dissident
