Lots of new discoveries! I'm not letting this thread die when there are so many new potentially habitable worlds and updates to them.   Just today, a paper was released describing the mass of the large habitable zone planet K2-18b. It's 2.28 times the size of Earth, and is now confirmed to be 8 ME with a density of 3.7 g/cm3. This indicates that it is a giant oceanic planet, with about 50% of its mass being water. Cool! The team also found a second planet of 7.5 ME orbiting three times
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