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Gliese 1214 b is a type of planet we call a Super-Earth -- a bit bigger than Earth, a bit smaller than Neptune. It's not dense enough to be rocky so it's probably like a warm mini-Neptune. There's nothing like it in our solar system and we don't really know what to expect, on my wish list for the future is a telescope to study exoplanets like Gliese 1214 b in more detail. I want to know what's going on beneath that cloud layer !