posted on Jun, 12 2014 @ 08:33 AM
a reply to: EnigmaAgent
I'll admit when I first read the thread tittle, I thought it was going to be about "why aliens will not come to Earth due to man made climate
A better tittle would have been something like: "How Stellar Evolution Might Keep Civilizations From Interstellar Flight" or something along those
It is true that our own planet has somewhere between 500 million to 1 billion years left before our sun becomes so hot that life will no longer be
possible here. Stellar evolution of stars with other planets face the same fate, however the amount of time they have depends on the type of star and
where the planet is of course.
"G" type stars like our sun have life spans measured in the billions of years, and if life on other planets develop like ours did, gives plenty of
time for life to develop. Longer if we start talking about red dwarf stars.
Super Giant stars have very short life spans, measured in hundreds of millions of years, like many of the stars of the constellation of Orion. They
are very large, very hot, and burn their fuel very fast. Their might not be enough time for any planets around stars like that.
However I could point out that we (humans) have space flight now, and even have ways (such as the Orion Project) to leave for another star. We went
from first learning how to do powered flight in the air just over 100 years ago, to being able to put probes around the outer planets of our solar
system.....and we still have 1/2 billion to a billion years left.