When people read about the universe, they often have trouble visualizing just how big it truly is. When thinking on the scale of atoms, the size of the universe is unimaginably large.
A single drop of water contains over 1.5 sextillion atoms, and there are approximately 75 sextillion drops of water in the ocean. While the ocean covers nearly 70 percent of the Earth's surface, water only represents a small fraction of the Earth's weight. Over 1,300 Earths could fit inside Jupiter, and the Sun could hold nearly 1,000 Jupiter-sized planets.