Word: warmth
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Dates: during 2010-2019
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Still, Kepler has had some tantalizing news on the biology front too. While looking for planets, the probe has been taking note of the behavior of the stars themselves. Our sun is remarkably steady, without dramatic changes in warmth and brightness that might have prevented the emergence and evolution of life - and Kepler now reports that two-thirds of the sunlike stars it's monitoring are no more active than the sun at its most turbulent. Lots of stable suns could mean at least a handful of promising Earths - and those, in turn, could mean living company...