|
Exo planets and Intelligent life
Was thinking the other day about SETI.
We are looking for rocky planets that might harbour intelligent life.
We are looking for atmospheres with the gasses of life. All well and good.
But what about metallic elements? Can we have technology "Intelligent life" without metallic elements? would we have the technology today if the Earth did not have such elements as Iron, Copper, Gold, Silicon?
Our sun provided Earth with these elements. Minor "rare" elements came from interstellar space?
So should we be narrowing our search to just stars of similar make up to our own? as a priority?
|