Keith Henson 
Member since Jun 29, 2017




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Re: “Tabby's Star

Robert Lockett asked, "What's in it for humanity?"

We journey into an uncharted future. Technological singularity, AI, nanotechnology and the like. It would be nice to know if we can survive these changes. An example of high-tech ET life around a remote star would indicate the future is survivable. So far, we don't know.

Of course, we could be the first in our corner of the universe (light cone) in which case we travel into the future with no guidance.

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Posted by Keith Henson on 07/08/2017 at 7:46 AM

Re: “Tabby's Star

Something is blocking considerable light from Tabby's star. By the Second Law of Thermodynamics, it's got to radiate, but at first look, it does not. At least it is 60 deg K or colder.

There are two ways this could happen, the light blocking stuff is way out from the star where the re-radiation temperature is low, or the radiation is being directed away from our line of sight. There are power satellite designs that radiate waste heat directionally away from the local ecliptic, but one 22 % of the area of the photosphere of Tabby's star is hard to imagine.

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Posted by Keith Henson on 06/29/2017 at 6:55 PM

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