"The star at the center of our Solar System."
The Sun accounts for 99.86% of the mass in the Solar System. It is so big that more than a million Earths could fit inside it! It looks yellow to us because of how our atmosphere scatters the blue light, but it's actually white (all colors blended together). A mystery that scientists are still trying to solve - its atmosphere gets hotter the farther you go out?! It's light takes 8 Earth minutes to reach Earth.