NASA’s Kepler extrasolar-planet finder has discovered its first Earth-sized planet orbiting a distant star, but don’t crank up the interstellar spacecraft yet. While its composition is rocky like Earth’s, its 8.5-hr. orbit means it is far too warm to lie in the “Goldilocks zone.” That is the name scientists give to the habitable zone around stars, where the temperature is “just right” to sustain water in its liquid state, and perhaps life that would need liquid water to survive. ...

THIS CONTENT REQUIRES SUBSCRIPTION ACCESS

You must be a paid subscriber to access "Kepler Finds Earth-Sized Rocky Planet".

 

Current Aviation Week Intelligence Network (AWIN) enterprise and individual members: please go to http://awin.aviationweek.com for access.

 

Not currently a subscriber? Click on the "Learn More" button below to view subscription offers.

Already registered? here.