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Browse all →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.
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61K
Top 10% in Science
substack
Science
~46/post
avg comments + likes (0.08% rate)
Above category average
Weekly
1.8 posts/week avg
vs 0.9/week category avg
Free
Category avg: $9.51/mo
248
newsletters in Science
Top 10% in Science
out of 248 newslettersPublishing Frequency
Weekly
Last published Mar 7, 2026
1.8 posts/week avg