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"The point sticks in your head: physics rules. Virtue does not triumph unless the physics allows it."
- Larry Niven
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| Identification Beacon | ||
| Radio pulse to identify orbiting craft. |
| They gave him an orbit; he matched in and steadied down, then set the Chili's identification beacon to his own combination, made sure that the radar of the ship's gig could trip it, and took the gig down to the auxiliary small-craft field at Goddard. |
| From Methuselah's Children,
by Robert Heinlein. Published by Astounding Science-Fiction in 1941 Additional resources -
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| Johns Hopkins Says Asteroid Deflection Will Be Difficult |
| Hayabusa 2 To Begin Asteroid Mining |
| Can Musk Starship Astronauts Use Magnetic Boots? |
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