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Paul Frederick
Science Time
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Comments by "Paul Frederick" (@1pcfred) on "Are We Alone in The Galaxy? Brian Cox on Alien Life" video.
Through scientific experimentation we've a fair idea how it happened. We know the broad strokes now at least. There are still some details that need to be filled in.
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@itsmeagain7825 one test tube is hardly an ocean either.
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Mork from Ork used nanu technology. Nanu-nanu!
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Early stars had short lifespans. Big dogs die young and the first stars were super massive. So they didn't last very long. Maybe 100 million years? We think density may be a problem. In a densely packed neighborhood you do have to worry about the neighbors making noise. Especially when that noise is a super nova. We live in a quiet neighborhood. Our civilization rose in a particularly stable time frame. Things have been pretty good on Earth since the last Ice Age.
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We already know of propulsion systems better than chemical now. We just haven't gotten around to building and using them yet. That takes time, money and will.
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They're not out of reach. Well, they're out of our immediate reach. You and I can't get there. But that doesn't mean some long range project can't.
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@botwitaprice energy in a limited closed system would be an issue. But our first deep space probes have lasted a long time so far. For a first try it was a good showing. They still have a few years left in them we think.
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@itsmeagain7825 the law of large numbers eludes people.
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We are the most intelligent thing that exists that we are aware of now. But we have not been searching very long or hard. With enough time and effort we may find something someday.
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@fisch0182 As I understand it the Webb will be able to detect elements in atmospheres. We won't be able to take pictures of cities. But we might be able to detect emissions. I've heard the Webb may even be able to directly image extra solar planets. It's a pretty powerful instrument. But we'll see.
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We can analyze planetary atmospheres at a distance using spectroscopy. That would tell us if we could breathe in the atmosphere. Chinese malware was used as a political tool to consolidate power and transfer wealth. It was all lies. What you were told is far from what actually happened.
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@BeaverTails0991 we all know what happened to the Martians when they tried to invade Earth in the 1930s.
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@ravenwda007 there is a cockamamie theory floating around about vacuum energy. I've only ever heard about it and never what it was on about. But from what I've gathered some have believed there's some kind of an energy field in space? Don't ask me. I'm no expert on the topic. Power in the aether? Was more popular long ago. Was 19th century stuff. From back when they were inventing vacuum tubes and the like. And they didn't really know what was going on there.
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Life on Earth is certainly special to me regardless of what else may someday be discovered.
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If life is not just chemistry then what is life?
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Once when I was camping I got buzzed by a fighter jet flying below tree top level. The person I was with saw it too. Then the next day that same flight happened about a mile south of us. Because the pilot saw us too. I can't say I felt anything though. Even though the plane couldn't have been more than a few hundred yards from me at its closest. I saw the guy in the cockpit. I think they were doing radar defense penetration testing or something. Or maybe the guy was just nuts? So yeah you can see some weird stuff camping.
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You do not only have to worry about where they are but also when they are too. You have to be in the right place at the right time or you miss your connection.
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@Fritz999 I just read an article about the rover on Mars heading up an ancient river delta looking for signs of past life. Maybe at one time there was life on Mars? But if there was it's not there anymore. Still, finding the remains of life would be pretty exciting. It would confirm there's life elsewhere.
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But what about quantum entanglement? We may be able to develop a technology that can spy near infinite distances instantaneously. Read a book called the Macroscope by Piers Anthony.
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Earth crossing asteroids are less common today than they were in the past. Whatever that was going to hit us pretty much already has. There was only so much flying around that could hit us. Not to say nothing will ever again. But the frequency is decreasing over time.
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The Universe itself travels faster than the speed of light. Which is why it is "infinite". You wouldn't disintegrate if you traveled at the speed of light but if matter went that fast it'd be infinitely massive then. Which would crush you under the massive g forces. Plus the amount of power it'd take to make it happen would be infinite as well. You'd have to pour the whole Universe into your tank and it still wouldn't be enough.
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