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Our mission is to answer the biggest questions of all, scientifically.
What is the Universe made of? How did it become the way it is today? Where did everything come from? What is the ultimate fate of the cosmos?
For most of human history, these questions had no clear answers. Today, they do. Starts With a Bang, written by Dr. Ethan Siegel, explores what we know about the universe and how we came to know it, bringing the latest discoveries in cosmology and astrophysics directly to you.
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Ethan Siegel is an award-winning PhD astrophysicist and the author of four books, including The Grand Cosmic Story, published by National Geographic.
Ask Ethan: Could evolving dark energy lead to a Big Crunch?
There's some, but not overwhelming, evidence that dark energy is evolving. What would it take for a "Big Crunch" to be our cosmic fate?
There are only a precious few minutes of totality during even the best solar eclipses. Don't waste yours making these avoidable mistakes.
There are a wide variety of theoretical studies that call our Standard Model of cosmology into question. Here's what they really mean.
In logic, 'reductio ad absurdum' shows how flawed arguments fall apart. Our absurd Universe, however, often defies our intuitive reasoning.
NASA's only flagship X-ray telescope ever, Chandra, still works and has no planned successor. So why does the President want to kill it?
Physicists just can't leave an incomplete theory alone; they try to repair it. When nature is kind, it can lead to a major breakthrough.
The least exciting of all eclipses, a penumbral lunar eclipse, foreshadows the spectacular show that April 8th's total eclipse will bring.
You can only create or destroy matter by creating or destroying equal amounts of antimatter. So how did we become a matter-rich Universe?