NASA’s Psyche observed interstellar comet 3I/ATLAS over the course of eight hours on Sept. 8 and 9, when the comet was about 33 million miles (53 million ...

From August to October, NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) mission tracked comet 2025 R2 (SWAN) — one of the thousands of comets ...

The 3I/ATLAS comet makes its closest approach to Earth, the Geminid meteor shower sparkles across the sky, and the Moon and Jupiter get close for a conjunction.

The ancient walls, ramparts, and ditches that wind through this Nigerian city are the longest known earthworks of the pre-mechanical era.

In southeastern Libya, Jabal Arkanū’s concentric rock rings stand as relics of past geologic forces that churned beneath the desert.

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