Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. The Ptolemaic model, where the Earth was stationary, and everything ...

In this video we see just how intricate the Ptolemaic universe was. Michael Moyer is the editor in charge of physics and space coverage at Scientific American.

Today, I wanted to talk about the history of the heliocentric model. After all, Copernicus’ most notable accomplishment is probably his proposed heliocentric, or sun-centered, model for the ...

Space Why the universe I invented is right – but still not the final answer Nobel prizewinner Jim Peebles introduced dark matter and dark energy into our standard model of the cosmos – but ...