Miah
Skilled Investigator
I thought he was smarter than this: "If life exists elsewhere in the universe, Hawking asks, why haven't we stumbled onto some alien broadcasts in space, maybe something like "alien quiz shows?""
Maybe because the universe is vastly larger than we can catch signals for, or maybe since the nearest galaxy is XXXXX light years away the broadcast hasnt gotten here yet. Maybe because all electro-magnetic radiation (which includes radio waves, microwaves, visible light, ultra-violet, xrays, and gamma rays) will spread out with distance and will, at some point, become too dim to be observable. Maybe because they don't use the same primitive radio waves we do. Maybe we do and don't realize it because it is encrypted.
Michio Kaku would have a field day with this.
Source: http://www.ajc.com/metro/content/news/stories/2008/04/21/stephenhawking_0421.html
Maybe because the universe is vastly larger than we can catch signals for, or maybe since the nearest galaxy is XXXXX light years away the broadcast hasnt gotten here yet. Maybe because all electro-magnetic radiation (which includes radio waves, microwaves, visible light, ultra-violet, xrays, and gamma rays) will spread out with distance and will, at some point, become too dim to be observable. Maybe because they don't use the same primitive radio waves we do. Maybe we do and don't realize it because it is encrypted.
Michio Kaku would have a field day with this.
Source: http://www.ajc.com/metro/content/news/stories/2008/04/21/stephenhawking_0421.html