4 days ago · New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

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.

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

1 day ago · What NASA and ESA Have Revealed? Recent updates from NASA, ESA, and leading observatories have confirmed that Comet 3I/ATLAS is unusually active and chemically …

1 day ago · 3I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches Earth in December 2025.

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.

3 days ago · Interstellar comet 3I/ATLAS reaches its closest point to Earth on December 19. We caught up with the team at the Institute of Astrophysics in Santiago, Chile.

5 days ago · New images taken by the Hubble Space Telescope and a Jupiter-bound mission showcase interstellar comet 3I/ATLAS ahead of its close pass by Earth.

Dec 4, 2025 · The interstellar comet’s size and physical properties are being investigated by astronomers around the world. 3I/ATLAS should remain visible to ground-based telescopes …

2 days ago · New images from ESA's Jupiter-bound JUICE spacecraft and the Hubble Space Telescope offer fresh views of interstellar comet 3I/ATLAS.