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The one cosmic secret that demands a new particle collider

The one cosmic secret that demands a new particle collider

The observation that everything we know is made out of matter and not antimatter is one of nature’s greatest puzzles. Will we ever solve…
Go to the profile of Ethan Siegel
Ethan Siegel
Ask Ethan: Why are inertial and gravitational mass equivalent?

Ask Ethan: Why are inertial and gravitational mass equivalent?

The mass that gravitates and the mass that resists motion are, somehow, the same mass. But even Einstein didn’t know why this is so.
Go to the profile of Ethan Siegel
Ethan Siegel
What do unexpected experimental results actually tell us?

What do unexpected experimental results actually tell us?

Scientific surprises, driven by experiment, are often how science advances. But more often than not, they’re just bad science.
Go to the profile of Ethan Siegel
Ethan Siegel
Official verdict: JWST’s early galaxies didn’t break cosmology

Official verdict: JWST’s early galaxies didn’t break cosmology

The “little red dots” were touted as being too massive, too early, for cosmology to explain. With new knowledge, everything adds up.
Go to the profile of Ethan Siegel
Ethan Siegel
It’s important that weight and mass are not the same

It’s important that weight and mass are not the same

Here on Earth, we commonly use terms like weight (in pounds) and mass (in kilograms) as though they’re interchangeable. They’re not.
Go to the profile of Ethan Siegel
Ethan Siegel
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