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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.
Ethan Siegel
Sep 4
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.
Ethan Siegel
Sep 3
7 unnecessary assumptions about life in the Universe
7 unnecessary assumptions about life in the Universe
So far, Earth is the only planet that we’re certain possesses active life processes. Here’s what we shouldn’t assume about life elsewhere.
Ethan Siegel
Sep 2
Ask Ethan: Why don’t we feel the Universe’s expansion accelerating?
Ask Ethan: Why don’t we feel the Universe’s expansion accelerating?
The Universe isn’t just expansion, but the expansion itself is accelerating. So why can’t we feel it in any measurable way?
Ethan Siegel
Aug 30
What is the origin of quantum uncertainty?
What is the origin of quantum uncertainty?
No matter how good our measurement devices get, certain quantum properties always possess an inherent uncertainty. Can we figure out why?
Ethan Siegel
Aug 29
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