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The physics behind curly hair

The physics behind curly hair

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.
Go to the profile of Ethan Siegel
Ethan Siegel
Ask Ethan: Why isn’t Richard Feynman your personal hero?

Ask Ethan: Why isn’t Richard Feynman your personal hero?

One of the 20th century’s most famous, influential, and successful physicists is lauded the world over. But Feynman is no hero to me.
Go to the profile of Ethan Siegel
Ethan Siegel
Meet the first star system to “solve” the 3-body problem

Meet the first star system to “solve” the 3-body problem

Due to chaos, it was long thought that planets couldn’t stably orbit systems containing three stars. GW Orionis is the first…
Go to the profile of Ethan Siegel
Ethan Siegel
Mars could have lived, even without a magnetic field

Mars could have lived, even without a magnetic field

Mars and Earth were sister planets in many ways, with early similar conditions. Why did Mars die? The leading explanation isn’t universal.
Go to the profile of Ethan Siegel
Ethan Siegel
The biggest holes in NASA’s suite of observatories

The biggest holes in NASA’s suite of observatories

NASA’s space telescopes and observatories bring humanity unrivaled science images and scientific discoveries. Here’s what should be next.
Go to the profile of Ethan Siegel
Ethan Siegel
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