Ethan Siegel

Ethan Siegel

A theoretical astrophysicist and science writer, host of popular podcast “Starts with a Bang!”

Ethan Siegel Starts with a Bang!

Ethan Siegel is a Ph.D. astrophysicist and author of "Starts with a Bang!" He is a science communicator, who professes physics and astronomy at various colleges. He has won numerous awards for science writing since 2008 for his blog, including the award for best science blog by the Institute of Physics. His two books "Treknology: The Science of Star Trek from Tricorders to Warp Drive" and "Beyond the Galaxy: How humanity looked beyond our Milky Way and discovered the entire Universe" are available for purchase at Amazon. Follow him on Twitter @startswithabang.

A large group of people with red hair gather outdoors, many wearing white clothing.
Whether your hair is straight, wavy, curly, or kinky isn't just genetic in nature. It depends on the physics of your hair's very atoms.
A group of five people stands in front of a brown van, channeling their inner Richard Feynman. The background features a wall adorned with lush plants, setting the perfect scene for these everyday heroes.
One of the 20th century's most famous, influential, and successful physicists is lauded the world over. But Feynman is no hero to me.
Due to chaos, it was long thought that planets couldn't stably orbit systems containing three stars. GW Orionis is the first counterexample.
Comparison of early Mars with abundant water and a thicker atmosphere versus the dry and arid Mars of today, much like Venus, which also died in terms of its potential to support life.
Mars and Earth were sister planets in many ways, with early similar conditions. Why did Mars die? The leading explanation isn't universal.
A vivid cosmic scene reveals colorful nebulae and stardust in vibrant shades of blue, purple, and orange, set against a backdrop of space. NASA observatories capture this celestial beauty, unveiling hidden holes in the vast tapestry of the universe.
NASA's space telescopes and observatories bring humanity unrivaled science images and scientific discoveries. Here's what should be next.
A vibrant cosmic explosion with bright colors radiating outward, set against a starry space background, captures the mystery of a bizarre supernova.
In the year 1181, a "guest star" was recorded in the constellation of Cassiopeia. Its modern supernova remnant is weirder than we imagined.
Diagram of the expanding universe concept with cosmic inflation, light cone, and time axis.
Almost everyone asserts that the Big Bang was the beginning of everything, followed by inflation. Has everyone gotten the order wrong?