In these maddening difficult times it’s often good to reflect on what you have achieved to keep yourself healthy and sane. Do you have a glass half-empty or one half-full?

SpringShip – Interplanetary Spaceship Design Practical design for a deep space, high speed interplanetary spaceship, and precursor for future interstellar ship design. (Begun 2001 AD) Introduction A practical solution to the problems of long term, long distant voyages in space.  …

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