Skywatchers worldwide are in for a charming cosmic display before the sun rises next week as three celestial bodies will ...

In the summer of 1831, people across the Northern Hemisphere witnessed a surreal transformation in the sky. The Sun appeared blue, at times even violet or green, casting an eerie light across ...

W e may have visually led predators to thank for some of the most dazzling marine species: sea slugs. Luminous greens, blues, ...