Giant blue spiral stuns sky-watchers: ... Fuel from the rocket’s exhaust froze in the atmosphere, reflecting light from the setting sun and appearing to spin in the sky.

A large sunspot has just reappeared on the sun's Earth-facing surface, almost two months after it first emerged. The unusually old dark patch remains stable and could be on course to become the ...

That's particularly true of the commonest kind of giant stars, the red giants. Most stars, including the sun, will eventually end up as red giants, and that's the case with blue stars too.

Here’s how it works. Neptune is the eighth and farthest planet from the sun but it is not the coldest. Our solar system's blue gas giant is far larger than Earth, at more than 17 times Earth's ...

Thankfully, our sun's sunspot activity occurs along an approximate 11-year cycle, giving us some indication of when to expect this solar weather.

Space The sun may spit out giant solar flares more often than we thought. A survey of more than 56,000 sun-like stars reveals that “superflares” that are linked to bursts of radiation which ...

Doradus, a red giant star 180 light-years away in the Dorado constellation. The star has a diameter about 350 times that of the sun, and it serves as a preview for our sun’s future. In about 5 ...

TAMPA, Fla. (WFLA) — Stargazers in parts of Europe were stunned by an unusual sight on Monday evening: a large, glowing blue spiral in the sky. Images and videos posted to social media showed ...