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1. Want to discover Planet X? You'll need these three tools | Astronomy.com
... Tonight's Sky . ... Want to discover Planet X? You'll need these three tools . By Kevin Schindler, Lowell Observatory Тљ|Тљ Published: Wednesday, May 20, 2015 . ... Lowell Observatory s intermittent 25-year search for a trans-Neptunian planet incorporated a variety of instruments before finally netting Pluto. ... During Percival Lowell s early search for Planet X , he compared pairs of photographic glass plates of the sky by overlapping the two and then examining them with a magnifying lens. ...
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Ссылки http://www.astronomy.com/year-of-pluto/2015/05/want-to-discover-planet-x-youll-need-these-three-tools -- 77.6 Кб -- 10.04.2016
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