2006-12-12 02:42:35 · 4 answers · asked by abrighella 1 in Science & Mathematics ➔ Astronomy & Space
So far we've seen no verifiable evidence of other sentient species. That said, I believe with some certainty that somewhere in our galaxy at some past, present, or future time, a sentient species did/does/will exist.
Why haven't we heard from them?
Perhaps they are not technologically advanced enough to be heard. They may be mastering stone knives right now, or experiencing their own Rennaisance.
Perhaps they are here right now. Any species sufficiently advanced to travel interstellar distances would be able to hide or masquerade with ease. That Boeing 737 that just flew by may be a surveillance craft.
Perhaps they are so far away they will never notice us and vice versa.
Perhaps they existed a million years ago and died out.
Perhaps they will exist a million years from now.
It is really impossible to know for sure.
The Drake Equation suggests that there is sentient life out there. The Fermi Paradox casts doubt. Play around with the calculation form at the second link and see what you think.
2006-12-12 02:45:05 · answer #1 · answered by Otis F 7 · 2⤊ 0⤋
I'm not sure what exactly you're talking about. So far we have no concrete proof that any extraterrestrial life exists, however it seems likely that there is some somewhere in the Universe.
2006-12-12 02:45:06 · answer #2 · answered by Anonymous · 0⤊ 0⤋
There is no real proof - yet - but that doesn't mean it isn't possible. Because there is life here on Earth, life elsewhere must also be possible. There is evidence, but evidence is not the same thing as proof. Hopefully we will see it in our lifetimes.
2006-12-12 02:46:09 · answer #3 · answered by Paul H 6 · 0⤊ 0⤋
Proves one of several things - potentially.
Be open minded about probabilities, but cynical about "evidence".
2006-12-12 02:44:41 · answer #4 · answered by Anonymous · 0⤊ 0⤋