Deep Dives
The Great Filter: Why the Galaxy Is Empty
There should be thousands of advanced civilizations in our galaxy. The math says so. We've found nothing. Robin Hanson called it the Great Filter — a wall almost nothing gets past.
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Deep Dives
Longer explainers that follow one astronomy question far enough to make it useful.
Deep Dives
Eyeballs on the Universe: Webb's Early Galaxy Problem Explained
Webb found galaxies in the early universe that shouldn't exist yet. Here's what the 'too many too early' problem means for cosmology.