5 ms·
> assuming that an ET civilization has detected our planet (which they could do from across the galaxy) The closest galaxy to ours is about 25,000 lightyears a
by andreasvc 15y ago
> assuming that an ET civilization has detected our planet (which they could do from across the galaxy)
The closest galaxy to ours is about 25,000 lightyears away, according to wolframalpha. In other words, we'll have to wait that number of years before an ET civilization from there might pick up on us. I think this makes the whole endeavor completely pointless.
- Dylan16807 15y agoDid you read 'across' as 'outside' or something?
- andreasvc 15y agoI did, but the milky way has a diameter of 100,000 lightyears, so it doesn't affect my argument.
- Dylan16807 15y agoBut a lot if it is really close too.
- InclinedPlane 15y agoI said detect our planet not detect our civilization. For all we know there is some civilization out there which periodically cycles through all the known possibly habitable planets they've detected and beams radio messages at them.
- jonmrodriguez 15y agoWe should do this.