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What does Stephen Hawking believe humans must do to survive?
What does Stephen Hawking believe humans must do to survive?
Which country is not mentioned as planning to send astronauts back to the moon?
Which country is not mentioned as planning to send astronauts back to the moon?
What does Robert Zubrin advocate for humans to start with in terms of colonizing space?
What does Robert Zubrin advocate for humans to start with in terms of colonizing space?
What does Elon Musk envision in terms of human colonization of Mars?
What does Elon Musk envision in terms of human colonization of Mars?
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What is one criticism of sending humans into space mentioned in the text?
What is one criticism of sending humans into space mentioned in the text?
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Which scientist believes that establishing space colonies will benefit humans on Earth in fields such as science, technology, medicine, and health?
Which scientist believes that establishing space colonies will benefit humans on Earth in fields such as science, technology, medicine, and health?
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What is the estimated duration of a one-way trip to Mars mentioned in the text?
What is the estimated duration of a one-way trip to Mars mentioned in the text?
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Which company is mentioned as being involved in building rockets for space exploration?
Which company is mentioned as being involved in building rockets for space exploration?
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