Scientists reveal the clearest images of the Sun’s corona using a new adaptive optics system, opening new paths for solar ...

Solar scientists have unveiled spectacular new images of plasma "rain" in the sun's corona using adaptive optics.

Amateur astrophotographer Emil Andronic has captured a striking image of the Cat's Eye Nebula from his home in Hertfordshire, ...

The sun's corona—the outermost layer of its atmosphere, visible only during a total solar eclipse—has long intrigued ...

Here’s how it works. The sun's atmosphere is made up of several layers, mainly the photosphere, the chromosphere and the corona. It's in these outer layers that the sun's energy, which has ...

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

The temperature can change from very hot to very cold, depending on sunlight exposure. It can range from 1,700°C (3,092°F) in the sun to -270°C (-454°F) in the shade.

The outermost layer of the cornea is maintained by a reservoir of stem cells housed in the limbal ring — the dark ring around the iris. When this essential source of rejuvenation is depleted ...