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BD+20594b is an unusual exoplanet

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2/4/2016 8:16:24 AM
Posted: 8 months ago
Its about half the diameter of Neptune, (58 Earths could fit in Neptune, so about 29 could fit in this one) yet despite its size it is a rocky planet as opposed to being a gaseous planet. At its size, it should become a gas or ice giant, not a rocky body, what possible reasons are there for this, I wonder?