| http://www.w3.org/ns/prov#value | - Our current observations tell us something about the sizes and orbits of these newly discovered worlds, but we have very little insight into their compositions.We are left with this situation where super-Earths appear to be the most common kind of exoplanet in the galaxy, but we do not know what they are made of, says Knutson.There are a number of possibilities.
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