The TRAPPIST Worlds – Should We Invest In A Back-Up Planet For Earth?

The discovery of seven metal-rich Earth-like planets orbiting a near-by star has really gotten everyone thinking about space colonization again. Four of these planets are in the Goldilocks Zone – a sweet spot where liquid water is stable and life could develop or survive if transplanted.

from Forbes – Tech http://ift.tt/2mv2Uxa
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