Joe1991
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1. The edge of the observable universe (relative to Earth) is 46.5 billion light-years away [1], not 5 million light years.
2. Humans have only observed a sliver of a fraction of that area.
3. Even if we can visually observe a planet it is almost impossible for us to determine what is on it.
[1] - Observable universe - Wikipedia, the free encyclopedia
I'm talking about the distance that we can determine the physical properties of planets. Given that we humans are not even close to being able to travel one light year, my point stands.
The fact that we humans cannot travel any significant distance in space means that for all practicle purposes, we are alone in the universe.