Where is our solar system’s super-Earth?

Look up at the night sky and among the stars you might see a few brighter dots — the planets in our solar system. What you won’t see, though, are the most common kinds of planets in the Milky Way: super-Earths and sub-Neptunes. These worlds, with sizes between that of Earth and Neptune, account forContinue reading “Where is our solar system’s super-Earth?”
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