How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth - but closer to the red planet than us at a safe 150 million miles (240 ...