Years ago, I heard reports of amateur astronomers glimpsing a huge emission nebula in our galaxy, cataloged as IC 1396. Deep astroimages showed an expansive, complex nebula in Cepheus, about 3° in ...
WASHINGTON — Researchers have designed a new compact camera that acquires wide-angle images of high-quality using an array of metalenses — flat nanopatterned surfaces used to manipulate light. By ...
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