Earth, ATLAS and Comet 3I
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4 ways to track 3I/ATLAS without a telescope as it makes its closest approach to Earth tonight
Interstellar comet 3I/ATLAS makes its closest approach to Earth on Dec. 19. Here's how you can track its progress both during the pass and as it races out of the solar system on its way to interstellar space, never to be seen again.
I've taken incredible photos of this interstellar comet for more than a month using two tiny iPad-connected scopes in my windowsill. You can catch it too, if you act quickly.
Discover why interstellar comet 3I/ATLAS is glowing green. Explore new Gemini North images, the mystery of its missing iron, and the future of space missions.