Science
3I/ATLAS carries water with a heavy-hydrogen ratio 40 times higher than Earth's oceans
63
Moderate Credibility
Score 63 / 100 · Tier 2
The two-minute version
Reporting on interstellar comet 3I/ATLAS describes a deuterium-to-hydrogen ratio far higher than terrestrial water, cited as evidence it formed in a much colder environment than our solar system.
Why it matters
An extreme heavy-hydrogen ratio strengthens the natural-comet explanation over exotic ones. Check which observatory and paper the number comes from, since figures on this object have shifted between reports.
What supports it · what weakens it
What supports it
- No single factor scored in the strongest band.
What weakens it
- No major weaknesses flagged in the rubric.
The credibility breakdown
Primary source
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