Slashdot: Chicxulub Impact Might Have Spread Life-Bearing Rocks Through the Solar System

[dfitzo53]

So Europa is out. Phobos and Deimos are obviously out since we don't want demons teleporting in and then taking over earth. Where CAN we land?

Just wanted you to know I got the reference and appreciated.

[Corcaigh]

the point isn't whether anyone else is "hearing" us, it is whether or not we are hearing anybody else.   Our signals have only been going for 60 or 7 years, so haven't reached anything far from our solar system yet (far, in cosmic terms...70 light-years is still righ tnext door

 

but.. should't we be "hearing" broadcasts from these ancient civs?

 

Maybe we have. And maybe the advanced civilizations have different broadcasting technologies that we aren't looking for. But as we rapidly improve our astronomy capability maybe we will see massive structures created by civilizations billions of years ahead of us, such as a Dyson sphere.

 

And there are around 1000 habitable star systems within 35 light years, so someone might have heard us.   And maybe we are being watched.

The sun emits (estimated) 3.846 × 10²⁶ watts per second.  This is from some guys that I love reading discussions about these types of topics.  Check them out:

 

http://www.physicsforums.com/showthread.php?t=223449

 

There is no way conceivable that the earth could emit as much as the sun, in any spectrum of EM.  It's not physically possible.  

 

Yeah ... almost half of the Sun's output is in the infrared and longer wavelengths, so even at radio frequencies we are still talking about a lot of energy. 

 

But someone should do the math.