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

Is the universe communicating with us through the messages of cosmic travelers? The latest find of 3I/ATLAS, an object ...

Was it a cosmic jellyfish, a fleeting light trick, or something more outlandish? When NASA astronaut Nichole Ayers took a ...

Tissue samples sent to the International Space Station reveal what can happen to astronauts on long-term missions.