How big is the universe?
Universe Size Party
How big is the universe?
You want to know how big the universe is? That's like asking how many grains of sand are on every beach on Earth, except the universe makes that question look adorable. Let's start small and zoom out — buckle up, because this gets wild fast.
Earth is big to us — 40,000 kilometers around the equator. You could fit about 1.3 million Earths inside the Sun. But the Sun? It's just one star in our galaxy, the Milky Way, which has somewhere between 100 and 400 billion stars. Imagine a city where every single person is a star, and that city has more residents than there are people who've ever lived on Earth.
