But thanks to high energy X-rays dancing on its surface, NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) was able to snap an image that showed the sun displaying a rainbow of colors.

The ultraviolet (UV) index is a number on a scale from 1-11+ that tells you how intense the UV rays from the sun are predicted to be at a particular time and place.

UV rays can damage your skin cells with any sun exposure. Your body is most susceptible to these dangers between 10 a.m. and 4 p.m., known as peak daylight hours.

NASA’s Earth-orbiting NuSTAR telescope is usually used to peer at X-rays from high-energy events out in the universe like black holes and supernovae. But recently, the agency decided instead to ...

NASA's Curiosity rover has captured "sun rays" on Mars for the first time, the agency says. The footage was taken on Feb. 6, NASA said, and showed the phenomenon as the sun set on the planet.

NASA's Curiosity on Mars sent back images of sun rays for the first time as the rover begins a study on clouds and their composition high up in the atmosphere.