ChrisA's latest activity
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CChrisA replied to the thread How the 'Great Filter' could explain why we haven't found intelligent aliens.Let's assume the number is small, let's say just two. (us and them) But going on just pure chance probability, any civilization should...
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CChrisA replied to the thread How the 'Great Filter' could explain why we haven't found intelligent aliens.That can't be the reason because the universe is so old that by now it should be filled to overflowing with the remnants of thousands of...
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CChrisA replied to the thread How the 'Great Filter' could explain why we haven't found intelligent aliens.Fossil fuels made it easy. But without them we would have been using renewable energy. Maybe wood and charcoal and then water power...
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CChrisA replied to the thread Trump may cancel NASA's powerful SLS moon rocket – here's what that would mean for Elon Musk and the future of space travel.China's announced plans are always very conservative. They are just as likely to be ahead of schedule than behind. The US changes...
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CChrisA replied to the thread Trump may cancel NASA's powerful SLS moon rocket – here's what that would mean for Elon Musk and the future of space travel.Engineers do not decide on the policy. Musk does that. I live near the Hawthrone SpaceX building and worked in the business for a long...
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CChrisA replied to the thread Trump may cancel NASA's powerful SLS moon rocket – here's what that would mean for Elon Musk and the future of space travel.Going into LEO before atmospheric entry is using circular logic. How do you slow down enough to enter LEO unless you have enough...
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CChrisA replied to the thread Trump may cancel NASA's powerful SLS moon rocket – here's what that would mean for Elon Musk and the future of space travel.Canceling it sets the entire moon and mars project back at leat 10 years. It might save money but, you'd loose a decade. SLS is an...
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CChrisA replied to the thread Trump may cancel NASA's powerful SLS moon rocket – here's what that would mean for Elon Musk and the future of space travel.On it's first test flight, it carried a human-rated capule around the moon and it landed back on earth. No other rocet except...
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CChrisA replied to the thread Pentagon UFO chief tells Senate 'very anomalous objects' need careful study (video).But my logic is completely infallible, I say, "I do not know what that object is, therefore I am confident I know it is an alien...
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CChrisA replied to the thread Design an interstellar 'generation ship' to spend decades among the stars with Project Hyperion competition.The theory is that he is not motivated to invent metal working because in his society metal working has a high negative value. It would...
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CChrisA replied to the thread Design an interstellar 'generation ship' to spend decades among the stars with Project Hyperion competition.I did not make this theory up. It is very much mainstream science. The theory is that cavemen did not invent metal working because...
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CChrisA replied to the thread Design an interstellar 'generation ship' to spend decades among the stars with Project Hyperion competition.in interstaller space there is NOTHING outside of the ship to see. It is pure black emptyness with only a background of stars. And...
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CChrisA replied to the thread SpaceX has dreamed up a Dragon ship on steroids to drag the ISS out of space.Did you do the math? How many SpaceX dragons are needed to reach Earth's escape velocity? My quick basic estimate with guessed...
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CChrisA replied to the thread Design an interstellar 'generation ship' to spend decades among the stars with Project Hyperion competition.crossing the gaps between stars certainly is physically possible. But not by sending modern-day humans. In only a few decades we...
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CChrisA replied to the thread Why does classical physics gravity formulas/measurements do not work at a quantum level, what’s missing?.My opinion is that classical physics is just a shortcut. It is the result of summing trillions of quantum effects. Other examples of...
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