[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Drakes Equation

In a message dated 95-08-24 18:22:40 EDT, GSP1954@aol.com writes:

>I am recalculating the Drake equation using the new evidence on the rarity
>gas giants etc for the robobook. Tentative conclusion, number of
>civilizations in universe is probably one.

Four planets out of nine in this solar system are gas giants. Where does your
source (an article in _Nature_?) get the idea they're rare? What is "rare" in
this context, anyway?