Signals

Where Did Earth Get Its Oceans? Maybe It Made Them Itself.

At first, scientists thought Earth’s water came from comets. Then, asteroids. Now, they wonder if Earth’s water is homegrown.

The origin of water rewritten — what we assumed came from outside may have been here all along. A pattern that recurs at every scale: we look outward for explanations that were always internal.
Source: https://www.quantamagazine.org/where-did-earth-get-its-oceans-maybe-it-made-them-itself-20260612/

At this moment, a spacecraft is headed from Earth to Europa, an ice-veiled moon of Jupiter thought to contain an ocean similar in some ways to one of our own. NASA engraved a metal plate affixed to the spacecraft with a poem, commissioned from Ada Limón during her time as poet laureate of the United States. It reads, in part: And it is not darkness that unites us, not the cold distance of…

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Original author: Robin George Andrews

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