Martin
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Topics posted by Martin
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- 2 replies
- 666 views
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- 2 replies
- 1400 views
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- 27 replies
- 3277 views
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- 36 replies
- 5880 views
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- 2244 views
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- 5964 views
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- 713 views
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Expanding space needs surroundings to expand into. T or F. 1 2 3
By Martin, in Astronomy and Cosmology
- 64 replies
- 8050 views
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- 6 replies
- 3146 views
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- 0 replies
- 1056 views
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- 6 replies
- 1306 views
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- 4 replies
- 970 views
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- 6 replies
- 1320 views
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- 19 replies
- 2415 views
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- 0 replies
- 609 views
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- 6 replies
- 1512 views
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Ice table covered by loose soil (hollow out a house under the ice?)
By Martin, in Astronomy and Cosmology
- 2 replies
- 1041 views
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Flying over Mars surface (animation with real-life photography)
By Martin, in Astronomy and Cosmology
- 6 replies
- 1328 views
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- 0 replies
- 923 views
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- 10 replies
- 1447 views
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- 28 replies
- 7065 views
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The universe could be infinite in spatial volume and matter content. T or F? 1 2 3
By Martin, in Astronomy and Cosmology
- 61 replies
- 9319 views
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- 52 replies
- 5767 views
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What happened before the Big Bang? (professional journal style)
By Martin, in Astronomy and Cosmology
- 17 replies
- 2848 views
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- 1 reply
- 980 views