The prefix "3I" designates it as the third confirmed interstellar object passing through the Solar System, after 1I/ʻOumuamua and 2I/Borisov. [23] 3I/ATLAS is an active comet consisting of a solid icy …

Feb 11, 2026 · Comet 3I/ATLAS is the third known object from outside our solar system to be discovered passing through our celestial neighborhood. Astronomers have categorized this object as …

Our goal is to be the best place on the web to both understand and experience 3I/ATLAS responsibly. Scroll the tabs at left for the story, then dive into interactive tools.

See the live position and real-time trajectory of interstellar comet 3I/ATLAS (C/2025 N1). Our interactive tracker uses the latest NASA/JPL ephemeris data for the most accurate simulation.

Track 3I/ATLAS in real-time with NASA data including current position, velocity, and sky coordinates.

1 day ago · There’s been plenty in the news about 3I/ATLAS over the course of the past 8 months. Our third confirmed interstellar visitor went behind the Sun during its closest approach, but reemerged in ...

Oct 9, 2025 · Track the current position of 3I/ATLAS in real-time using official NASA/JPL data and interactive 3D visualizations.

Feb 12, 2026 · Comet 3I/ATLAS is leaving the solar system with a dramatic light show The interstellar space rock shows off the illuminating effects of its brush with the sun. Andrew Paul

Feb 11, 2026 · For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the third known interstellar comet ever spotted. When scientists …

Jul 7, 2025 · How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here are all of your questions answered.