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NASA

Return Window

As NASA’s Artemis II mission prepares for its high-speed re-entry and scheduled splashdown in the Pacific off San Diego, it marks more than the end of a test flight.

Return Trajectory

The launch of Artemis II is being celebrated as a technological milestone, but its deeper significance lies elsewhere.

Earth’s ‘date’ with ‘mysterious’ interstellar comet 3I/ATLAS on Friday – everything to know

Interstellar comet 3I/ATLAS, only the third known object from outside our solar system, will pass closest to Earth on December 19, 2025. Discovered by NASA’s ATLAS telescope in Chile, the fast-moving comet has intrigued scientists with its hyperbolic trajectory, extreme speed and unusual green coma, sparking global scientific interest and ongoing observations.