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1901 Photograph: The Orion Nebula
By the turn of the 20th century advances in photography contributed an important tool for astronomers.
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Astronomy Picture of the Day: Aurora and Manicouagan Crater from the Space Station
How many of these can you find in today's featured photograph: an aurora, airglow, one of the oldest impact craters on the Earth, snow and ice, stars, city lights, and part of the International Space Station?
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