Meet Kepler-47d, a puffy planet that lies 3,340 light-years from Earth. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The only known ...
The candidate planet Proxima d is estimated to be just 25% as massive as Earth. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The sun's nearest ...
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