Two weeks ago, interstellar comet 3I/ATLAS was at conjunction, on the opposite side of the Sun with respect to Earth. Last week, it reached perihelion, the closest point it would ever get to the Sun. Now it is back from behind the Sun and we can see it again. In fact, Earth is moving towards it as the comet moves away from the Sun, so the next several weeks are a great time to study it. And everyone can get involved. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

The comet will be visible for anyone with a telescope or very good binoculars in the hours before dawn. The telescope doesn’t need to be anything extravagant to catch this object, but don't expect to see a spectacle like Hale-Bopp, the Great Comet of 1997 . Still, this is

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