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717
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861
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3
779
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1356
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5
654
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660
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709
7
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1036
3
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7
930
36
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142
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6
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889
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1008
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34
1691
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1978
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1021
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869
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960
Science Continued...
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901
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6
702
A new means of space propulsion... closed loop pulse propulsion... here's the idea [View all]
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864
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756
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13
959
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841
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1961
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774
Science Continued...
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1067
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1970
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1959
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688
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1002
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630
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894
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9
778
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10
815
5
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1
1072
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2
747
11
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33
2177
21
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41
2821
1
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3
770
1
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6
1042
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8
820