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The launch of the first man-made object to orbit the Earth, the USSR's Sputnik 1, on 4 October 1957EarthSputnik 1 Four years later on April 12, 1961,

The launch of the first man-made object to orbit the Earth, the USSR's Sputnik 1, on 4 October...

Category: Documents
Released: January 17, 2016
7B U2 Reading( Ⅰ ) 溧阳市燕山中学 黄庆芳. community centre （社区中心）

7B U2 Reading( Ⅰ ) 溧阳市燕山中学 黄庆芳. community centre （社区中心）

Category: Documents
Released: January 11, 2016
Jay Dubner Columbia University 2008 AGU Fall Meeting December 16, 2008 Teacher Research Programs: An Effective Form of Professional Development to Increase.

Jay Dubner Columbia University 2008 AGU Fall Meeting December 16, 2008 Teacher Research Programs: An...

Category: Documents
Released: January 27, 2016
1 [1] Central Institute for Meteorology and Geodynamics, Hohe Warte, Vienna [2] Deutsches Zentrum für Luft und Raumfahrt, Institut für Physik der Atmosphäre,

1 [1] Central Institute for Meteorology and Geodynamics, Hohe Warte, Vienna [2] Deutsches Zentrum...

Category: Documents
Released: December 17, 2015