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electromagnetic radiation) K2-18b is 111 light-years - about 650 million million miles - from Earth, too far to send a probe. Image caption Waterworld: up to 50% of the atmosphere of K2-18b could also be composed of water.

In reality, the whole chart is ridiculous, as within the above charts we find that all the candidate planets have semi-main axis of zero.5au or much less. The host star must be lower than 1/four of a the solar luminosity. How can a planet have a SEMI MAIN AXIS of zero.5au or less, and have an equilibrium temperature that is under the freezing level of

  

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