Which comet, classified as a Jupiter family comet, had a D/H ratio consistent with Earth's seawater, suggesting an origin in the Kuiper Belt?
Answer
Comet 103P/Hartley 2
Observations of Comet Hartley 2 using the Herschel Space Observatory provided the initial evidence that some comets, specifically those influenced by Jupiter originating from the Kuiper Belt, possessed Earth-like water signatures.
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