Starts With A Bang

A dense starfield, with various colored stars shimmering through a dark cloud-like formation, lies against a deep black background in the mysterious zone of avoidance.
The Universe is out there, waiting to be discovered

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.

Full Profile
A bald man with a long beard and handlebar mustache gestures with his hands against a backdrop of an upside-down cityscape wearing a purple shirt.
Groupthink in science isn’t a problem; it’s a myth
Scientists are notoriously resistant to new ideas. Are they falling prey to groupthink? Or are our current theories just that successful?

Ethan Siegel

solar system model
Webb’s image of NGC 1512 shows a face-on barred spiral galaxy anchored by its central region, which is circular and shows a bright white point at the center with blue and yellow circles around it. The galaxy’s large bar is crossed by filamentary dust lanes that extend diagonally to the top left and bottom right. The bar is connected to a dense oval-shaped ring of orange spiral arms that start at the edges of the bar
In July of 2022, the first science images from JWST were unveiled. Two years later, it's changed our view of the Universe.
A large circular particle accelerator with several cables and machines is where engineers work inside and around the structure. The facility, dedicated to solving the muon g-2 anomaly, has platforms and specialized equipment surrounding the central structure.
A longstanding mismatch between theory and experiment motivated an exquisite muon measurement. At last, a theoretical solution has arrived.
Overhead view of athletes in starting blocks on a track, preparing for the fastest 100 meters. Marked lanes and starting lines are visible.
The all-time record is Usain Bolt's 9.58 seconds, set in 2009. What is the fastest time, ultimately, for an ideal human body?
A stopwatch appears normal on the left side while the right side is digitally warped, creating a distorted, wavy effect that makes you question, "Does time exist?
The passage of time is something we all experience, as it takes us from one moment to the next. But could it all just be an illusion?
JWST deep field vs hubble
From inside our Solar System, zodiacal light prevents us from seeing true darkness. From billions of miles away, New Horizons finally can.
Black and white sketch of a bald man with a long beard, wearing a suit and bow tie, looking to his left.
Adams was infamously scooped when Neptune was discovered in 1846. His failure wasn't the end, but a prelude to a world-changing discovery.
A robotic hand is centered against a blue background, surrounded by a green and blue circuit board pattern, symbolizing the intricate processes of math AI and why machines learn.
It's knowledgeable, confident, and behaves human-like in many ways. But it's not magic that powers AI though; it's just math and data.