arstechnica.com

Non-gas giant has 73 times Earth’s mass, bewildering its discoverers (arstechnica.com)

Scientists have been working on models of planet formation since before we knew exoplanets existed. Originally guided by the properties of the planets in our Solar System, these models turned out to be remarkably good at also accounting for exoplanets without an equivalent in our Solar System, like super Earths and hot Neptunes....

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