The sun does not burn; it glows from the intense heat. It is too hot for flames to form.

Space is so big that even the asteroids in an asteroid belt are incredibly far apart. Scientists think it would be hard to hit one of these space rocks.

Speed and gravity affect how an object experiences time. The faster you go, the slower time will pass for you compared to slower objects. Satellites orbiting Earth have their clocks set at a slower pace than clocks on Earth to make up for this difference.