Astronomy
The Solar System
Quick fact
The solar system is about 4.6 billion years old and spans roughly 287 billion kilometers across—if you drove a car at highway speed, it would take over 3,000 years just to reach the edge of the Sun's influence.
Why this is interesting
Every morning the Sun rises, but did you know it's hurtling through space at 828,000 km/h while dragging Earth and the other planets along? What holds this incredible whirlwind together?