'Exozodiacal' Light Detected Around Alien Habitable Zones

November 3, 2014 6:35 PM

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Zodiacal light, as seen from Earth, can often be witnessed shortly after twilight or before dawn; it appears as a faint glow apparently emanating from the direction of the sun. This glow is caused by scattered sunlight from grains of dust distributed throughout interplanetary space.

Now, for the first time, astronomers have surveyed exozodiacal light — the same phenomena, albeit much brighter — in 9 other star systems near their habitable zones.

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