Our Sun is a medium-size, medium-bright star. It exploded into existence about 4.6 billion years ago, becoming the center of our solar system.
Like everything in the universe, the Sun is constantly moving and changing. This is hardly noticeable, however, because we move along with it, and the changes happen over millions of years.
The Sun is moving about 155 miles (249.55 kilometers) per second in the direction of 2 stars, Virgo and Hydra Centaurus, dragging our solar system with it. As with all stars, our Sun has a life expectancy.
Right now, the Sun is categorized as a dwarf, a medium-mass star. It will ultimately—billions and billions of years from now—cool down and die out or become a black hole.