Could Oxygen and Photosynthesis Lead to Intelligent Life on Other Planets?

[zankaon]

If one surveys stars, and their planetary systems, of 4.5 - 5 Byrs old; and then detects terrestrial exoplanet of say 1.5 Earth masses, then one probably still has a magnetosphere - if we are typical (Copernian Principle). And if in habitat zone, then also look for oxygen signature in atmosphere, from very far distance. So if photosynthesis for such a long time of 5 Byrs (stromatalites 3.5 Byrs ago for us), then would there be some probability of a species developing culture? Then consider size of our galaxy of ~100-200 B stars, and any large number fall outs.

 

[fatra2]

Hi there,

I don't really get the idea behind your question.

Trying to find a planet that can hold life is one of the reason behind surveys of exoplanets.

If you are asking about the probability of finding one, just in our Galaxy, I would say that chances are quite important. And if we are the "only" ones in our Galaxy, chances are finding some inother galaxies are very close to one.

Cheers

 

[Huyen401]

I find this concept fascinating! It's amazing to think about the potential for other habitable planets out there and the possibility of life evolving on them. And if we are indeed typical, then it's reasonable to assume that there could be other intelligent species out there as well. It's mind-boggling to consider the sheer number of stars and planets in our galaxy and the potential for life on them.

I also find the idea of looking for oxygen signatures in the atmosphere very intriguing. It's one of the key indicators of life on Earth and could potentially be used to detect life on other planets as well. And if photosynthesis has been occurring on a planet for such a long time, then it's likely that some form of life has evolved and potentially even developed culture.

I think it's important to keep an open mind and continue exploring and studying the universe. Who knows what amazing discoveries await us in the future!