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Space and astronomy
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environment and energy
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transportation
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Ancient Egypt
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static electricity
static electricity
Hot, warming, freezing
Weizmann Institute
July 26, 2010
11 תגובות
The dust fountains of the moon
Ran Levy
November 15, 2009
11 תגובות
The cities of light hidden from view
Galileo - The Science Magazine
December 26, 2008
2 תגובות
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