"The Gas Giant" wrote in message
...

"Rob Dekker" wrote:

Where does this 20 year number come from ?

Can't remember where or when I heard it, but I distinctly heard Shozzy
say "because that's when I'm retiring." Sounds reasonable to me!

With 200 billion stars in the Galaxy, and 10,000 ETI civilizations,
Each of these ETIs need to send beacon signals to an average of
10million stars in its neighborhood continuously.

With a message reading:

"Simply send 6 x 10^50 atoms of hydrogen to the star system at the top of
the list, cross off that star system, then put your star system at the
bottom of the list and send it to 100 other star systems. Within one-tenth
of a galactic rotation you will receive enough hydrogen to power your
civilization until entropy reaches its maximum! IT REALLY WORKS!"

'-)



Neat - a galactical chain letter (of sorts)!

jm