The night sky is the greatest show around. Part of its power is its infinite mystery. There are revolutions in astronomy and physics and long cherished ideas are shattered about the nature of the universe and space and time and even reality itself.
So back to those very early universe turns out that it was made of matter and antimatter, and it turns out that every particle has an antiparticle. And it sounds crazy… sci-fi.
Gravity, the attractive force that affects all matter in the universe.
