3 ms·
Distance from Earth to Alpha Centauri is about 110 million times the distance to moon. And then remember inverse-square law. Which makes things quite a bit wors
by Ekaros 3y ago
Distance from Earth to Alpha Centauri is about 110 million times the distance to moon. And then remember inverse-square law. Which makes things quite a bit worse.
- XorNot 3y agoThe inverse square law only applies to omnidirectional antennas though: but stars have known positions, so any transmitter in the galaxy would be focused.
- defrost 3y agoEven laser beams spread with distance, and these are vast distances. How do you imagine focusing "any transmitter in the galaxy" to converge at a distance of, say, 200 light years? Any rough calculations on the method, focusing array size?
- charcircuit 3y agoWhich is why Alpha Centauri is not our closest celestial neighbor as the moon is closer.