June 12, 2026
Splash scandal from deep time
Where Did Earth Get Its Oceans? Maybe It Made Them Itself
Earth may have cooked up its own oceans — and the comments are absolutely flooded
TLDR: A new idea says Earth may have made much of its own water while it was still a molten young planet, instead of getting it mainly from comets. In the comments, readers swung between genuine awe, “did I read that right?” confusion, and gloriously wild side theories about underwater civilizations and ancient planetary rings.
Scientists have spent years arguing over who delivered Earth’s water: icy comets, rocky asteroids, or, plot twist, Earth itself. The new idea catching fire is that our young planet may have mixed hydrogen with oxygen trapped in molten rock and basically made its own water from the inside out. Translation for the rest of us: the oceans might not have been shipped in from space after all — they may have been homegrown.
But the real splash is in the comments, where readers instantly turned this into a cosmic family feud. One camp was in full “wait, let me see if I got this straight” mode, with one commenter carefully boiling the theory down to Earth creating its own custom “flavor” of water under crushing pressure. Another came in with an even wilder twist: maybe some ocean water came from Earth’s ancient rings collapsing, which sounds fake until you realize they were very much not kidding. Meanwhile, one user took the discussion in a delightfully philosophical direction, asking why life began in the ocean but civilization took off on land — and whether an underwater civilization was ever possible. Casual!
And because the internet can never stay on one lane, another commenter got distracted by the artwork and shouted out the article’s visuals like they’d wandered into an awards show. So yes, the science is huge: comet theory is wobbling, asteroid theory has issues, and the self-made ocean theory is rising. But the vibe online? Equal parts awe, confusion, sci-fi brainstorming, and nerdy chaos.
Key Points
- •The article says scientists still do not know with certainty how Earth first acquired its water.
- •Comets were long considered the leading source of Earth’s water, but spacecraft measurements found cometary water chemistry that did not match Earth’s.
- •Asteroids became a more popular explanation because they impact Earth more frequently and their water appears chemically closer to Earth’s water.
- •A newer hypothesis proposes that rocky planets like Earth may be able to generate water internally through interactions involving magma, hydrogen, and high-pressure processes.
- •ESA’s 1986 Giotto mission to Halley’s comet measured the deuterium-to-hydrogen ratio, an important comparison point in testing comet-origin theories.