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Earth Similarity Index

Proposed scale on how similar a Planetary-mass object or natural satellite is to earth

en-GB/ˈɜːθ ˌsɪmɪˈlæɹɪtɪ ˈɪndɛks/
en-US/ˈɝθ ˌsɪməˈlɛɹəti ˈɪndɛks/

Categories:

measurement scale