Eager skywatchers will have a unique opportunity tonight as interstellar comet 3I/ATLAS makes its closest approach to Earth. This cosmic event will be livestreamed for free, allowing enthusiasts to observe the comet in real-time.
Live Stream Details for Interstellar Comet 3I/ATLAS
The Virtual Telescope Project will host the livestream starting at 11 p.m. EST on December 18, 2025, which is 0400 GMT on December 19. Viewers can watch as robotic telescopes located in Manciano, Italy, provide stunning views of the comet, depending on weather conditions.
Closest Approach Timing
Comet 3I/ATLAS is expected to reach its closest point to Earth at 1 a.m. EST on December 19, which is 0600 GMT. At this time, it will be about 1.8 astronomical units away, approximately 168 million miles (270 million kilometers)—nearly twice the average distance from Earth to the sun.
About Comet 3I/ATLAS
- Discovered: July 2025
- Survey: ATLAS (Asteroid Terrestrial-impact Last Alert System)
- Significance: Only the third confirmed interstellar object detected in our solar system
- Previous Objects: 1I/’Oumuamua (2017), 2I/Borisov (2019)
Researchers are particularly interested in the composition and behavior of 3I/ATLAS. This data could provide valuable insights into the formation of planetary systems beyond our solar system. However, the comet is too faint for the naked eye and may only be visible through larger telescopes.
Viewing Recommendations
Observers with telescopes of 8 inches or larger may see the comet as a faint, fuzzy patch of light under optimal conditions. For those unable to use telescopes, the livestream offers a comfortable alternative to experience this rare celestial event.
Stay tuned for more updates on space news, including rocket launches and other skywatching events! Make sure to tune in for the live stream of interstellar comet 3I/ATLAS tonight.
