A gallery of Voyagers greatest hits—and they are truly great

reader comments 16 Share this story Jupiter’s great red spot is larger than Earth. This gallery highlights some of the Voyagers’ best images. NASA A close-up of the great red spot. NASA This image of the crescent moon of Europa led scientists to believe a large ocean exists beneath the ice. NASA And here’s another […]

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China built the world’s largest telescope, but has no one to run it

Enlarge / This picture taken on September 24, 2016 shows the Five-hundred-metre Aperture Spherical Radio Telescope in southwestern China’s Guizhou province. STR/AFP/Getty Images reader comments 129 Share this story During the second season of The Big Bang Theory, the aspiring actress Penny borrows money from Sheldon. Without a second thought, the theoretical physicist grabs a […]

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Google-born startup thinks its time for a ground-source heat pump renaissance

reader comments 120 Share this story Dandelion uses this photo in all of its promotional materials, although the image doesn’t show what the system actually looks like in any capacity. But perhaps it reflects the target structure that would benefit from a ground-source heat pump. Dandelion A basic view of how a ground-source heat pump […]

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