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Matter & Energy

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hydrogel disks

IT’S ELECTRIC  A new type of energy source made with hydrogel disks (shown) works a lot like the power-producing organs inside electric eels.

illustration of neutron star collision

CRASH AND WAVE   In a galaxy 130 million light-years away, two neutron stars collided. This year, in the first detection of its kind, observatories caught the resulting gravitational waves and light show (illustrated).

satellite beaming light down to telescope in China

SPACING OUT  Quantum communication through space is possible thanks to a Chinese satellite that beams particles of light down to telescopes like this one in Xinglong, China (shown here tracking the satellite’s location with a laser).

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