/sci/ - Science & Math

>>3017238

...For propulsion purposes, microfusion bursts triggered by antihydrogen-hydrogen annihilation (possibly with a component of lithium added) will prove efficient up to ship-cruising speeds approaching twelve percent the speed of light, owing to jets of relatively slow, massive particles. Above twelve percent lightspeed, propulsion shifts from antimatter-triggered fusion jets to straightforward matter-antimatter annihilation, which produces a lower mass thrust than fusion, but provides particles with the high-exhaust velocities necessary to push the ship to a high fraction of lightspeed.

How much antimatter might be needed for a trip to Alpha Centauri - assuming that Asimov Arrays or something very much like them will eventually provide humanity with the excess energy required for its large-scale production? We have estimated that the fuel stores (both antimatter and matter combined) might be equal to roughly half the mass of the rest of the spacecraft, or about one hundred tons (to assure "burning" of all available antimatter, an as-yet-undetermined excess of matter will be required).

>>2162067

Yeah, that too.

>>2126976

Did people know? Of course not, how could anyone suspect of her? The animal, the subhuman, meant to be a slave – No, nobody could suspect that she knew far more about humans than any psychologist, that she knew more about men than their women – By mere observation, because she had never been with one. Laura was the only one of her kind, and human men were not indecent enough. To lust after her? Most certainly. But they would never go as far as to eye her for over a fraction of a second. She preferred it this way. She didn't like personal things.
She carried a folder. An actual, physical one, of ink imprinted on dead trees. It was labelled “Relativistic Photosailing”, subtitled “David Valk – Laura Lebedev”. She waited for the whole thing to end, for the mice-brained mechanical waiters (So perfect in their details as to even have beads of sweat on their foreheads) to pick up everything, wipe the fruits with their sleeves and walk out as if they were dancing, for people to leave and others to stay and for the stage to be set up.
The Open Space Movement had organized it all: The guests sent to try out the Titan hotel were also invited to the first join OSM/GA conference on Deep Space Exploration.