The Goldilock World in Cygnus

An artist’s conception of Kepler-186f, courtesy of NASA Ames/SETI Institute/JPL-Caltech

A cosmic finding: astronomers have discovered Kepler-186f, which NASA calls “the first validated Earth-size planet to orbit a distant star in the habitable zone … (it) confirms that Earth-size planets exist in the habitable zones of other stars and signals a significant step closer to finding a world similar to Earth.”

The search for a habitable world is the quest for a world that’s not too hot, not too cold, but just right — which is why it’s often called a Goldilocks world.

The catch? Kepler-186f exists some 500 light-years from Earth, in the constellation Cygnus.

There really is no place like home.

Blue Marble

 Further reading:
NASA press release:
Paper in the journal Science, published by the American Association for the Advancement of Science (Paywall):


Independent, non-partisan and employee-owned, FactsandOpinions serves, and is funded by, readers. We do not carry advertising or solicit donations from foundations or causes. Our original work in Dispatches, Think and Photo-Essays is available for a $1 site day pass or at a modest subscription price. Use the SUBSCRIBE  form to the right, on our free Frontlines blog, to receive notices of all new work on site.