Starts With A Bang
Starts With A Bang, Big ThinkExplore the cosmos with astrophysicist and author Dr. Ethan Siegel! From the origin of everything to the fate of the universe, Ethan and Big Think are here to answer your biggest questions.
| Platform |  | Pricing | Only free issues | Publishes | Twice weekly |
|---|---|---|---|---|---|
| Issues | 184 | Founded | 2 years ago | Last Issue | 21 hours ago |
| Active | |||||
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startswithabang.substack.comLatest Issues
Cosmic birefringence: the signal that could upend cosmology
Light emitted at the time of the CMB, just a few hundred thousand years after the Big Bang, travels through the Universe at the speed of light before arriving at our eyes now: 13.8 billion years later. If polarized light is rotated, it coul...
The gravity paradox
with Ethan Siegel • August 15, 2026
Greetings readers,
There’s a lot that can feel heavy here on planet Earth, but from a physics point of view, the reason for that is always the same: gravity. High up above our atmospher...
The strongest experimental hint that gravity is quantum in nature
An illustration of the early Universe as consisting of quantum foam, where quantum fluctuations are large, varied, and important on the smallest of scales. Positive and negative energy fluctuations can connect to one another on these scales...
Tinkering with science's future
with Ethan Siegel • August 8, 2026
Greetings readers,
Of all the worlds we’ve ever discovered, including the hundreds we know of in our Solar System and the many thousands of exoplanets around other stars and in interstel...
Which 10 atmospheres are the Solar System’s thickest?
Credit: NASA, ESA, CSA, Matthew Tiscareno (SETI Institute), Matthew Hedman (University of Idaho), Maryame El Moutamid (Cornell University), Mark Showalter (SETI Institute), Leigh Fletcher (University of Leicester), Heidi Hammel (AURA); Proc...
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Explore the cosmos with astrophysicist and author Dr. Ethan Siegel! From the origin of everything to the fate of the universe, Ethan and Big Think are here to answer your biggest questions.
Learn from the world's biggest thinkers.
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