A mysterious visitor from beyond our solar system is defying expectations and igniting fierce scientific debate as it hurtles ...

This is your chance to meet the What If team! Which challenge should Peter do next? The best comment will have a Zoom meeting ...

Polling shows that nearly half of Americans now believe aliens have visited this planet—and that the number who aren't sure ...

Is there an Outer SpaceX? With 3I/ATLAS set to fly by Earth in just over a week, experts continue to speculate over its origins. Harvard Scientist Avi Loeb believes that if aliens, the comet wouldn’t ...