The Oort Cloud, an expanse of icy bodies in the far reaches of our solar system, is shown here in a scene from "Encounters in the Milky Way," a show at New York City's Hayden Planetarium that ...

NASA/JPL-Caltech - PHOTO: This diagram shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system. It will make its closest approach to the Sun in October.

A diagram shows the projected trajectory of the interstellar comet 3I/ATLAS, labeled C/2025 N1 here, as it travels through our solar system. NASA/JPL-Caltech ...