theedgeofthefreud

theedgeofthefreud t1_j96g3bs wrote

Even if an alien civilization did inhabit all of its own solar system, we would be currently unable to detect them. We can't actually observe any of the world's they would inhabit. Also, what makes you think that we would inhabit half the galaxy? A quick Google search informs me that currently a trip to proxima centauri would take 80,000 years. 80,000 years is a long time. Consider how humans lived 80,000 years ago, and try to envision how they will live 80,000 years in the future. It's pretty close minded to be so sure that there is nothing alive in such a vast place as this universe. Perhaps you've seen that picture describing the reach of our radio transmissions? https://www.planetary.org/space-images/extent-of-human-radio-broadcasts

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theedgeofthefreud t1_j96cxni wrote

You do recognize that exo planets are detected by the rotation of their stars, not by direct observation, and that the closest star is 4.25 light years away? How in the universe could we say if there are aliens or not? Especially considering that there are at least 100 billion stars in our galaxy and that there are likely 125 billion other galaxies.

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