Astrophysicists are mapping a vast, hidden structure in the gas around the Sun that behaves like a tunnel carved through interstellar space, potentially linking our solar system to distant stars.

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. When you purchase through links on our ...