NASA shares three never-before-seen images of Mars with the caption “You have a letter from Mars” …

The Twilight Phenomenon is a phenomenon that is visible to ground observers as a booster rocket or missile ascends from darkness to sunlight.This phenomenon usually occurs 30 minuted before sunrise or 60 minutes after sunset.

Chinese scientists have detected a dozen ultra-high-energy (UHE) cosmic accelerators within the Milky Way, a find that could overturn humanity's understanding of the galaxy. It could help reveal the origin of cosmic rays, which have puzzled scientists for a century....

This is a condition that occurs to at least some people when they reach a high peak area like Mt.Everest. It is known that as the altitude increases, the oxygen decreases… As a result, the brain does not get enough...