S
Space & Astronomy
Space exploration and astronomy
There Are 1 Quadrillion Stars Behind This Grain of Sand
There are nearly 10,000 galaxies and 1 quadrillion stars in a patch of sky no bigger than a grain of sand. How on Earth did we figure this out? Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://www.pbsspace...



