Charlie Stross on Blanets, Diamond Planets, and the Exoplanet Zoo

Blanets and Weird Worlds

Astronomer-novelist Charlie Stross surveys the strangest confirmed exoplanets — from Chthonian and Mega-Earths to pulsar planets, ultra-hot Neptunes, Hycean worlds, rogue planets, and blanets, planets that may form in the accretion disk around a supermassive black hole. Known exoplanets reached 6,445 by October 2026, and our solar system, he argues, is the odd one out.

At noon, it's hot enough to boil lead: it probably rains molten iron.

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2026-10-29