Cloud formations are a key indicator of atmospheric conditions, and flat clouds with fluffy tops are especially telling.

A team of scientists captured the sharpest-ever view of the sun's outer layer using a telescope in California. NBC News' Gadi ...

Taylor Jenkins Reid tells PEOPLE that stargazing with her daughter, Lilah, helped to shape her new novel 'Atmosphere.' The ...

Hailstones have been said to bounce up and down through clouds as they grow. A new study found that many stones take much simpler paths.

Some of the ions become trapped in a layer of the atmosphere called the ionosphere, where they collide with gas atoms—primarily oxygen and nitrogen—and "excite" them with extra energy.