ChrisA's latest activity
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CChrisA replied to the thread The great silence: Just 4 in 10,000 galaxies may host intelligent aliens.Complex life likely does depend on the "rock cycle". Without any way to recycle the crust, a planet would be worn down smooth with...
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CChrisA replied to the thread SpaceX's Falcon 9 rocket can return to flight, FAA says.We did not know the failure was with a system that is used only for landing. What if a turbopump exploded a half-second before...
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CChrisA replied to the thread Space tourism: What are the pros and cons?.The Writght brothers were not rich. Their dad was a preacher and they owned a bicycle shop. In the early days, the people in the...
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CChrisA replied to the thread FAA requires investigation into SpaceX Falcon 9 landing failure.SpaceX fanboys need to think. How can you say it is safe to fly the rocket if you have no idea what caused the problem? Likely it...
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CChrisA replied to the thread Blue Origin's powerful New Glenn rocket to debut this October with NASA Mars launch.It is a gamble. They could have placed a block of concrete on top to simulate a real spacecraft or did like SpaceX and put a sports car...
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CChrisA replied to the thread What happens when your warp drive fails? Scientists have the answer.If the warp could have its gradient reduced to zero in a VERY short amount of time. The people inside would not feel anything because...
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CChrisA replied to the thread What happens when your warp drive fails? Scientists have the answer.You are right in that the ST canon never says anything about the shape of the wrapped space. But they do say that the shape is such...
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CChrisA replied to the thread Monetizing Space.It is possible for methane/oxygen rockets to be carbon neutral. As of today, they are not. What matters is where you get the methane...
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CChrisA replied to the thread How can we build landing and launch pads on the moon?.I don't understand how the vacuum reduces the heating. I think it goes the other way. In a vacuum you only have radiative cooling...
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CChrisA replied to the thread Monetizing Space.You were right to do so. A colony needs a way to support itself economically. Even if we assume the colony has a perfect communist...
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CChrisA replied to the thread Are we alone? Intelligent aliens may be rare, new study suggests.Yes, even if there were an Earth-twin with humans just like us only 100 light years from our planet, we would not know about it because...
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CChrisA replied to the thread Question ISS Reusability.I just wrote about the relative magnitude of household cook stove to rocket launches. But why stop there? Why not compare the...
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CChrisA replied to the thread Question ISS Reusability.Why compare it to the airline fleet? Why not compare Starship to the emission of kitchen stoves in the city of Dallas TX? I think...
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CChrisA replied to the thread Are we alone? Intelligent aliens may be rare, new study suggests.Yes, if Drake were more honest he would have computed the error bounds by estimating the error bars of each parameter and then we'd know...
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CChrisA replied to the thread SpaceX makes Starlink Roam available throughout the US.We can't talk about using solar pannels for this terminal until we know its power requirements. Same for batteries, we don't know what...
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