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Astronomical Firsts

In the Blink of an Eye [1]
How was the size of Earth first measured? [2]
Who built the first observatory? [3]
Who invented the telescope? [4]
Who made the first map of the universe? [5]

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Source URL: http://stardate.org/astro-guide/firsts

Links:
[1] http://stardate.org/astro-guide/gallery/587
[2] http://stardate.org/astro-guide/faqs/how-was-size-earth-first-measured
[3] http://stardate.org/astro-guide/faqs/who-built-first-observatory
[4] http://stardate.org/astro-guide/faqs/who-invented-telescope
[5] http://stardate.org/astro-guide/faqs/who-made-first-map-universe