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“Is this as big as it sounds?”
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What is so big about it?
It is only logical that there are other “earth like” planets
in the universe.

Before one gets al excited and thinks this explains ET and
all the UFO tails on Kook to Kook, keep in mind that EVEN IF
they could travel the speed of light, it would take them 600 years to just get here.

Even as far back as the mid fifties it was “speculated” that
a planet could exist as close as 11 light years away.
Radio enthusiast were told to listen for signals, as it had been 22 years since high powered TV transmissions had started.
The theory was that 11 years for those transmission to get there, and 11 years for them to try a return signal.
Of course, it was all for naught.

Radio transmissions degrade after a distance, we would have to intercept a laser beam to get a transmission or any sort of intelligible message, or signal. And a highly focused laser beam.

Of course, radio signals can be highly focused, but over 11 light years the signal will be so distorted that it won’t even really exist.

11 light years = 64522656000000 miles = 2688444000 earth diameters.

There are signals that have been out of the ordinary, from space. The most remarkable being the WOW signal.

http://en.wikipedia.org/wiki/Wow!_signal
http://www.damninteresting.com/the-wow-signal/

I can’t think of the name of the scientist who came up with the equation for intelligent life in a galaxy, using what humans believe to be true about what it would take for intelligent life to exist. It’s not a generous estimate.....I think it’s Clark or something. But IIRC it’s 10, 10 intelligent species in our galaxy.

Finding a radio signal like the WOW signal would be pretty damn rare. If it’s an intelligent signal.

As long as the guess estimation is even nearly close to being correct. Which it’s probably not....interesting though.