Earlier, 3I/ATLAS was being rumoured to be an alien spaceship that might be heading to probe Earth, now that it has flown by ...

Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...

The vast silence of the cosmos was momentarily interrupted on Friday as a mysterious celestial traveller reached its closest ...

WASHINGTON — A DARPA official said the agency canceled a space nuclear propulsion project it was jointly developing with NASA in part because the effort was overtaken by advances in more conventional ...