Closer and closer to Earth-sized

The technology we’re using to discover extra-solar planets is getting better and better — a Swiss group managed to find a two-Earth-mass planet in a circular, 3-day orbit around its star. This is fantastic! Obviously the planet is not habitable or anything, and it’s 20 light years away so it’s not exactly terribly far away or anything, but still, we’re improving on the technology day after day. I can’t wait until we manage to find something worth sending a probe out to investigate.

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Closer and closer to Earth-sized
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