The line became known as the main sequence. Competing groups of astronomers came up with different ways to categorize main ...

Barnard's Star is a small, dim star, of the type that astronomers call red dwarfs. Consequently, even though it is one of the ...

Here’s how it works. If you’ve ever wondered when the sun is going to die, there’s no need to worry — our star has about 5 billion years of life left. The sun is the engine that powers ...

The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan.

As the countdown to the year's first total lunar eclipse begins, here's what to know about the difference between a lunar eclipse and a solar eclipse.

The total lunar eclipse in Virgo is coming the night of Thursday, March 13, reaching totality at 11:54 p.m. PT and Friday, ...

Natasha Cloud requested a trade from the Connecticut Sun after she was traded there in early February, The Athletic reported on Tuesday. Cloud, an elite two-way guard who was fresh off a strong ...