/u/tdelange96's posts in /r/askscience

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During a spacecraft launch and flight, for example a spaceship travelling to and docking at the ISS, how much of travel is calculated before hand and how much of the flight is reactionary?

538 upvotes

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How have we measured/determined the great pressure, temperature and material composition in the Earth's core?

2 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
During a spacecraft launch and flight, for example a spaceship travelling to and docking at the ISS, how much of travel is calculated before hand and how much of the flight is reactionary?	538
How have we measured/determined the great pressure, temperature and material composition in the Earth's core?	2