DailyDirt: To Seek Out New Life And New Civilizations...

from the urls-we-dig-up dept

The search for extraterrestrial life hasn't yielded much evidence that there's anyone else out there. We could be looking in the wrong places or not looking with the right instruments to detect faint signals -- or maybe we're actually alone. But as they say with the lottery, you can't win if you don't play, so we won't find any aliens if we don't continue looking. (Assuming that aliens aren't already on their way to come and get us.) After you've finished checking out those links, if you have some spare change (or more) and would like to support Techdirt, take a look at our Daily Deals for cool gadgets and other awesome stuff.
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Filed Under: aliens, astrobiology, dyson sphere, extraterrestrial life, fermi paradox, goldilocks zone, seti

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  1. icon
    Oblate (profile), 22 Apr 2015 @ 6:53am

    Dyson spheres

    The article describes a key difference from 'traditional' Dyson spheres, in that it seems to state that they would be occupied on the exterior of the sphere. The previous descriptions I had seen of larger ones were occupied on the interior, and spun to simulate gravity. While this seems unstable, it's not an unsolvable problem. One other problem is that there would be no natural 'daylight' since the star would be enclosed by the sphere (and underfoot). One obvious solution to this problem would be to build the sphere around a white dwarf that was part of a binary system, so the other star would provide lighting to the surface. To astronomers, this would appear as a single star with a mysteriously large wobble, with maybe a slight possibility of an occasional transit of the sphere. A widely spaced binary would probably be preferable, with the primary being a larger, brighter star to be able to provide sufficient light at that distance. I note that there is an entire class of binary stars (Astrometric) where the secondary star can not be identified, according to space.com. Obviously not every one of these would have a Dyson sphere hiding the secondary, but it might be an interesting area to begin investigating.

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