Initial observations suggest the comet, called C/2025 F2 (SWAN), will continue getting brighter as it approaches the sun.

Historical accounts of vast ocean waters glowing in the dark go back hundreds of years, and researchers are still trying to ...

The northern lights may glow over part of the United States this week following a pair of eruptions on the sun. Here's where ...

Comet SWAN25F, which was first seen by ESA's SOHO satellite, is thrilling skygazers with its striking green color. It is visible just before dawn on t ...

WHEN you think of radioactive material, one would immediately associate it with a green glow. Take the opening sequence of The Simpsons animated series, for example, where the Homer Simpson ...