[Southack]

"estimated the number of alien civilisations in our galaxy that might currently be broadcasting radio signals."

One problem with such an estimation is that it depends on alien civilizations using radio waves instead of gravity waves for communication.

If our current level of science is wrong, and if gravity propagation is actually faster than radio waves, then advanced civilizations may not be using radio at all, except for a brief period early in their development.

And that would explain why we haven't detected *any* off-planet life after all of these years of looking and listening. We've been looking at light and listening to radio; they've been chatting with Gravity.

5 Legislative Days Left Until The AWB Expires

[RadioAstronomer]

One problem with such an estimation is that it depends on alien civilizations using radio waves instead of gravity waves for communication.

If our current level of science is wrong, and if gravity propagation is actually faster than radio waves, then advanced civilizations may not be using radio at all, except for a brief period early in their development.

From all indications, tests, and theories, gravity waves travel at exactly the speed of light. General Relativity precludes information from being transferred faster than light.

Also modulating gravity waves would require enormous energy. Would be far easier and more energy efficient to use EM. Occam's Razor.

[xp38]

There is a logical explanation to no contact. Uhura and the Federation prefer to use Sub Space Communications.

[muir_redwoods]

What if radio waves are as lethal as gamma radiation to most life forms? What if we are one of the few to develop a tolerance to it? We might be a celestial radioactive waste dump to most civilizations with all of our broadcasting/

Hardly welcoming

[Robert_Paulson2]

by the time we learn to use gravity wave transmissions...
we will be able to use gravity propulsion as well...
and what was once 100 light years, will be right next door.

so would it be for our "friends" out there.
and perhaps that is where our visitors come from... right next door.

perhaps in our lifetime...
if we have any money left after ridding the world of the bomb belt cult members...

we could spend some REAL money on getting some NEW technology.