For the first time, astronomers have distinguished between the morning and evening atmospheres of a single planet, revealing two remarkably different environments at its edges.
A recent study suggests that the Amaterasu particle, along with other extremely energetic cosmic rays, may actually be atomic nuclei heavier than iron.
Einstein's equations have withstood every experimental test for more than a century; however, according to one philosopher, they have not withstood careful scrutiny of the language used to describe them.
Residents of New England were startled over the weekend as a loud quaking boom shook the northeast, while many observers spotted a bright fireball streaking through the skies over the U.S. and Canada.
Scientists studying an ancient asteroid crater on the Korean Peninsula have uncovered rock formations that may offer clues to the rise of atmospheric oxygen on Earth.
Subtle changes are occurring in the nighttime world on our planet, according to NASA scientists who say an unexpected pattern has surfaced in new maps of the world’s artificial light.