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168 points julienchastang | 1 comments | | HN request time: 0.215s | source
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belinder ◴[] No.43711682[source]
If life evolves on a planet with only oceans, no surface, imagine how much longer it would take to discover rockets that can leave the planet.

Like if there was no surface on earth, and only fish, there must be some very significant reason for advanced fish to even want to leave the water, let alone the atmosphere

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1. ajross ◴[] No.43712739[source]
Earth had precious little land, if any, over the first billion or so years too. The crust takes time to differentiate and pile up into cratons.

Though in this particular case it looks like the planet is a gas giant, plausibly with a water ocean but without any higher density rocky/metal core to make "land" out of.