Questions on 'space travel and exploration' tag
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148
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139
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139
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132
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142
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140
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138
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1
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149
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131
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1
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176
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179
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1
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466
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1
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496
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1
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416
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369
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397
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1
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469
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1
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424
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0
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0
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374
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0
answer
389
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1
answer
424
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1
answer
447
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0
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1
answer
438
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1
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422
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1
answer
427
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0
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1
answer
468
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1
answer
442
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0
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1
answer
472
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0
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answer
421
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1
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404
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1
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436
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1
answer
405
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385
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1
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433
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answer
377
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