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Space flight is all about applying relatively low amounts of trust to "fall" out of orbit of one body, and into orbit with another. The ability to do this is expressed as dV (delta-v) - the amount you can adjust your velocity. You want to travel to Mars when Earth's orbit is at it's closest velocity and just behind Mars, such that the velocity of Earth through the solar system "throws" you at Mars - the point where the smallest velocity change puts you in Mars orbit. The Earth orbits at 30km per second. That's an enormous velocity, and you have to have it working for you, not against you. This means anyone trying to go to Mars will conclude the same or extremely similar time to start.
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Jul 2, 2022 01:44
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No chance Danny wasn't winning this race when they did the loving Adama manoeuvrer 
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Jul 11, 2022 23:03
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Edward Mass posted:I think we should have a competition to see who we think is U.S. President on the show in 2003, because neither George W. Bush nor Al Gore would make sense as candidates in 2000 given the lack of inside access they had in real life. I'm going to stake out Mario Cuomo if it's a Democrat and John McCain if it's a Republican.
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Sep 21, 2023 12:34
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