That is a good person to follow
Think about it. How old is the earth?
How old is th euniverse compared to Earth? 4X?
Plenty of time for other intelligent evolutions to happen and disappear
Now, how long does it take light to reach earth from a visible star? How about another galaxy?
Yes, a long time. That is why there needs to be another mechanism to travel faster than light speed. Or else, no contact, ever.
That star you are looking at most likely does not exist.
Depends how far away it is, how old other galaxies can exist.
the proper atmosphere, and correct rotation around another star to support life is very slim.
Be careful here. We can only speculate what life forms can exist in what climates. Just think of all the new discoveries on this planet about life forms in extreme environments, under th eocean in volcano vents of exptreme temperatures, of heat, or in the ice caps, or on radioactive waste dumps. So, no, we have no idea what life can exit on different planets. We only have reference to what we know here and is changing every day.
And whats even more improbably is that life supporting planet being close enough for contact with us - in mankinds lifetime, or in a hundred million years.
But, in ancient galaxies, they could have sent out some form of communications into the universe that would arrive at the speed of light. So we could learn about them, their past that is
Life may have existed on another planets in the Milky Way a billion years ago, but have since died out with black holes.
Or, just destroyed themselves as we are so hell bent on doing here
Or, their galaxy just collided with others. We know this from observation that galaxies do collide.
When you think of the expanse of the universe, and the time line of it's existence, we are fools to think we'll ever encounter life from other solor systems or galaxies - at least in our lifetime.
Other ga;laxies, not, solar systems? Depends. After all, that is the unknown to be discovered, not audio science.
Ancient past and the present are a nanosecond of time in the history of the universe.
Yep, I keep telling that we are insignificant in the scheme of things.
Interstellar travel? You are watching way too much Star Trek.
Or not, lately
I'm thinking micro-organisms, if anything at all, in other galaxies.
Why? Why would we be the only intelligent life forms? After all, they do have time on their side for evolution, right?
Its awesome thinking about the age and size of our universe.
I am not sure I can comprehend it and it is not even close to infinity