Comet 3I/Atlas: December Viewing Guide & Countdown
- * Event: Comet 3I/Atlas will reach its closest point to Earth on Friday, December 19.
Here are the relevant facts from the provided text:
* Event: Comet 3I/Atlas will reach its closest point to Earth on Friday, December 19.
* Origin: This comet originates outside our solar system – it’s an interstellar object. It is the third confirmed object to do so.
* Distance at Closest Approach: It will pass approximately 270 million kilometers from Earth, which is 1.8 times the distance between Earth and the Sun.
* No danger: Experts confirm the comet poses no danger to Earth or other planets.
* Detection: The comet was detected on July 1, 2025 by the Atlas (Asteroid Terrestrial-impact Last Alert System) network in Chile.
* significance: interstellar comets are rare and valuable because they provide facts about the formation of worlds in other star systems.
* Closest Approach to Sun: Comet 3I/Atlas had its closest approach to the Sun on October 29, passing 203 million kilometers away.