Comment Re:Correction (Score 1) 97
"Vital For Possibility of Earth-like Alien Life"
A lot of assumptions there.
We can't even communicate with other species here on Earth in the same Class as us. Elephants, whales, and dolphins show signs of intelligence. Certainly enough to communicate with each other. And we've hunted species of two of them to the verge of extinction. The Great Apes are in the same Family as humans and we can't have a meaningful conversation with them. Perhaps they are simply too primitive. Or maybe we aren't as smart as we would like to believe.
A non-terrestrial species may communicate using some form of telepathy or chemical component. That would be fun to try to figure out. Or use gravity waves over long distances. What if they are silicone based and live for thousands of years. It could take them 3 days to say hello using subsonic vibrations.
Until 20 years ago we didn't even know that Elephants could use bone conduction through their feet to listen to subsonic calls from other elephants that create seismic vibrations. Or that they also had cells in their feet that are able to pick up vibrations in the ground.
ET could be screaming at us right now and we don't even know.it. The messages could have been sent through cosmic radiation and is encoded in cancer cells. They may have thought that would be the easiest way to get our attention and we just haven't picked up on it yet.