200 years ago, we hardly knew anything about our Universe on cosmic scales. Today, there's so much that we know. Here's how we arrived.
Ethan Siegel is a Science Writer at various prestigious outlets. He specializes in topics related to cosmology, astronomy, and physics, with a keen interest in space travel and Earth sciences. Ethan has been featured in Forbes, Medium, Freethink, Big Think, EIN Presswire, and NewsBreak, among others.














