A Blue Moon is a rare occurrence that depends on the timings of full moons during the year. The moon is not blue during a Blue Moon.

Blue Monday 2026 meaning and date explained. Find out why it is dubbed the saddest day of the year and coping mechanisms to help you beat the January blues ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? At the simplest level, different colors of light have different wavelengths.

Blue light is a high-energy light that the eyes absorb from computers, smartphones, LED lights, and fluorescent lights. The sun is the biggest source of blue light. On a sunny day, it's 100,000 times ...

Lorne J. Hofseth does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...