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Could a trained rat become an astronaut on a flight to Mars?

3.666665
Average: 3.7 (3 votes)
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Is Cosmic Radiation Dangerous?

4.333335
Average: 4.3 (3 votes)
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Newton’s mistake or how to calculate the speed of light in water

4.6
Average: 4.6 (5 votes)
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Astronomical perpetual machine

4
Average: 4 (3 votes)
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Journey to a Black Hole - Learning Cycle

4.5
Average: 4.5 (4 votes)
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FITS image of the Planet Saturn

0
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FITS image of the Planet Saturn

0
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FITS image of the Planet Saturn

0
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FITS image of the Planet Saturn

0
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FITS image of the Planet Saturn

0
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