Reanalysis of NASA’s Galileo mission data has revealed ammonia on Europa’s surface for the first time. The nitrogen-rich compound appears along cracks in the ice, suggesting recent transport from the ...

The moon greets Jupiter two days ahead of its full moon phase on Feb. 1. Look east at sunset on Jan. 30 to spot the near-full moon shining close to the gas giant Jupiter among the stars of the ...

A mysterious interstellar visitor sparks fears of alien contact as Baba Vanga's prophecy predicts a colossal spacecraft in 2026.

Comet C/2025 K1 (ATLAS) crumbled in high-resolution footage captured by the Gemini North telescope atop Mauna Kea in Hawaii. Glowing pieces of the comet are visible in the 8.1-meter diameter ...