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  1. ... the extensive use of robotics we have today when anything in space needs to be seriously explored. But the US did...

    11 Answers · Science & Mathematics · 02/12/2019

  2. Yes. That is one of the dangers of being an astronaut in the 25th century. We don't have to worry about it because we have not yet invented space travel.

    7 Answers · Science & Mathematics · 27/11/2019

  3. ... the big bang happened everywhere at once, because it caused space/time to come into existence, but is it an expanding sphere or what? ...

    14 Answers · Science & Mathematics · 26/11/2019

  4. close. The Apollo flights actually circled the moon, so they were a bit further away than the moon, perhaps a few hundreds of miles. 

    10 Answers · Science & Mathematics · 23/11/2019

  5. ...one of the US astronauts on board the Russian Mir space station...  It was his sleeping period, and he closed...

    3 Answers · Science & Mathematics · 21/11/2019

  6. ...because Earth's mass creates a gravity well that curves the space time continuum. In addition, Earth's atmosphere refracts light...

    13 Answers · Science & Mathematics · 21/11/2019

  7. ... is, on average, about 7000K (6,730 C). Empty space by itself doesn't have a temperature: it's the things in that...

    5 Answers · Science & Mathematics · 16/11/2019

  8. ... also calculated the probability that an electron in empty interstellar space will spontaneously travel back into its recent past. The study comes...

    12 Answers · Science & Mathematics · 10/11/2019

  9. ...able of the three. A big problem with forward or backward time travel is the space position issue. If you did manage to go back in time, you'd end up...

    5 Answers · Science & Mathematics · 10/11/2019

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