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Crewed spaceflight (also referred to as human spaceflight or manned spaceflight) is space travel with a crew aboard the spacecraft. When a spacecraft is crewed, it can be operated directly, as opposed to being remotely operated or autonomous.

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Is 2001: A Space Odyssey's Discovery One still a plausible design for interplanetary travel?

A retractable version of the spinning ship appears in Andy Weir's Project Hail Mary book. While ~~cruising~~ accelerating at 1.5g for almost four years the ship looked like a normal space ship. When i …
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