There's also a Nova documentary version if parent would prefer to watch something: https://www.pbs.org/wgbh/nova/series/the-elegant-universe/ https://www.pbs.or

There's also a Nova documentary version if parent would prefer to watch something: https://www.pbs.org/wgbh/nova/series/the-elegant-universe/ https://www.pbs.org/wgbh/nova/series/the-elegant-universe/ I'll add an additional recommendation: Stephen Hawking - The Theory Of Everything