How Was The Universe Created?

Can’t get enough of lizards? We’re back with a bonus episode answering more of your lizard questions with Adam Clause of the San Diego Natural History Museum. This week, chameleons, Komodo dragons, iguanas, monitor lizards and tuatara! How do chameleons change color? Why are Komo ...  Show more

Deep in the basement of the San Diego Natural History Museum, there are thousands of jars filled with preserved reptiles and amphibians. In this episode, But Why takes a tour with collections manager Adam Clause to answer your questions about lizards! How do lizards climb walls? ...  Show more

Tai is fascinated by what’s in the dark spaces between the stars. Considering there are trillions of stars in the universe (and counting!), it seems a bit odd that the universe isn’t just a blinding ball of light. So then, why is space so dark? For transcripts of this series, ple ...  Show more

When you look up at the night sky, what do you see? A few stars, or a satellite, maybe even one of the seven other planets in our solar system? But how many planets are there in all of outer space? We asked astronomer Mark Popinchalk to help us find the answer! Got a question tak ...  Show more

A century ago, astronomers were locked in a debate about the scope of our universe. Were we it? The answer is no. There are other galaxies beyond the Milky Way, and they are speeding away from us. Answering that question left astronomers with an even bigger puzzle. Why is everyth ...  Show more

The solar system is big, the distances between stars bigger, and the distance to the center of the galaxy in which we live is even bigger than that. But all of that is tiny compared to the distance to the edge of the known universe! Just how big is that? The Math Dude breaks it a ...  Show more