Cosmologist Sean Carroll gave a TED talk Distant time and the hint of a multiverse. He said “The universe is really big. We live in a galaxy, the Milky Way Galaxy. There are about a hundred billion stars in the Milky Way Galaxy. Every one of these (little blobs) is a galaxy roughly the size of our Milky Way — a hundred billion stars in each of those. There are approximately a hundred billion galaxies in the observable universe. . .”
“What you have to think about is we have a universe with a hundred billion galaxies, and a hundred billion stars each. At early times, those hundred billion galaxies were squeezed into a region about this big – (literally a pinpoint) — at early times.