Main content

Why are there so many spheres?

Why does gravity create stars, planets and moons that are spherical? Maggie Aderin-Pocock heads to the fun fair to find out.

6 minutes

This clip is from

The Sky at NightHow Gravity Shapes the Universe

More clips from How Gravity Shapes the Universe

More clips from The Sky at Night

See all clips from The Sky at Night(563)