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The only two “arrows of time” we have don’t match
The only two “arrows of time” we have don’t match
Our thermodynamic arrow of time explains why the entropy of any isolated system always increases. But it can’t explain what we perceive.
Ethan Siegel
Jul 4
The mystery of the Moon’s two faces could soon be solved
The mystery of the Moon’s two faces could soon be solved
The near and far sides of the Moon are so different from each other, and no one is sure why. New lunar samples could confirm a wild theory.
Ethan Siegel
Jul 3
Why JWST doesn’t have the same limits as Hubble
Why JWST doesn’t have the same limits as Hubble
All telescopes are fundamentally limited in what they can see. JWST reveals more distant galaxies than Hubble, but still can’t see them…
Ethan Siegel
Jul 2
The Universe’s “dark ages” were briefer than we imagined
The Universe’s “dark ages” were briefer than we imagined
There was a time where no starlight was visible throughout the entire cosmos. That time was short-lived: shorter than astronomers imagined.
Ethan Siegel
Jul 1
Ask Ethan: Could gravitational waves collapse into a black hole?
Ask Ethan: Could gravitational waves collapse into a black hole?
Gravitational waves carry enormous amounts of energy, but spread out quickly once they leave the source. Could they ever create black…
Ethan Siegel
Jun 28
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