Even if they were here on earth (or close to Earth), why would they use
radio when they have a better method?

Dave


"John Donson" <harigejan@hotmail.com> wrote in message
news:40eb8c49$0$8445$ba620dc5@nova.planet.nl...

DaveL wrote:

I guess you are not up to speed on basic physics.  I'll explain.
The reason Nasa can use radio to communicate with the space shuttle
is because the shuttle is in orbit around our planet.  It's very
close to us.  But when you are talking about communicating with ETs
on a planet that may be on the other end of the galaxy then it may
take hundreds of years.  Radio waves travel at a fixed speed of
186,000 miles per second.  Even talking to an astonaut on Mars would
take ten minutes before you heard his reply.  To receive a signal
from the closest star to us (Alpha Centuri) would take over four
years.

So if the ETs are out there, you can bet they won't be using radio
for communication.  They will be using something else which travels
faster. Something we have not discovered yet.  Something like Star
Trek's subspace radio which is not limited to the speed of light.
Who knows?  Maybe there are clues to these technologies hidden in
the crop circles which turn up from time to time.

DaveL

I guess you missed my point. Of course it is very difficult to communicate
across the vast distances of space. The point I was trying to make was

that

aliens might be using radio locally, to communicate with themselves. That
would be endlessly more likely than that they would use it to send a

signal

to us. And since there is very little in space to stop radiosignals, they

go

on and on and on.