Over the quarter century I’ve been writing this column, I've been flabbergasted by the advances in telescopes for backyard ...
The Arecibo Message as it appears when its 1,679 bits are properly aligned on a grid (left), an annotated illustration ...
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First Known Double Gravitational Lens Is A Cosmic Telescope Into The Distant UniverseNot only that, but the second lens also magnifies the first – though not very bright, it can be seen in the images collected ...
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