Is a sun a star or a planet? Current definitions define a star as a body that generates its own energy. While humans have relied on the sun for hundreds of thousands of years, it's only in the last ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration showing the ...

Everyone loves lists, it seems. My three “10 Cool Facts About the Moon” lists proved popular, so I’m following up with three lists about the Sun. Here’s the first one. 1. The Sun is a star. It’s ...