“Dyson Spheres” as an Alternative to the Dark Matter Explanation of Hidden Masses in Galaxies

Abstract

The concept of the Dyson Sphere is well known – to build an engineering construction around a star to utilize as much of the star’s energy as it is possible. Even if the detection of a “Dyson Sphere” by infrared radiation contradicts to the entire idea of the collection of star energy, they still could be detected by the gravity of a star within the “Dyson Sphere” as well as by brightness changes of stars passing behind them. A star within the “Dyson Sphere” adds the star’s gravity into the gravity of the galaxy containing this star, even if the star itself is hidden. Therefore if “Dyson Spheres” exist, the total gravity of light-emitting objects in galaxies must be less than the gravity of the entire galaxy. In fact we observe this effect, which is a well-known effect of “hidden mass” in galaxies. To solve the “hidden mass” puzzle, physicists introduced a new kind of matter –“dark matter”. However (as far as the author knows) the “Dyson Spheres” were never seriously taken into account and discussed in scientific literature as a possible solution of the “hidden mass” problem. Researches of gravitational microlensing put strict limits to the percentage of regular cosmic objects that can pretend to solve the “hidden mass” problem. However these researches are not fully suitable for analysis of “Dyson Spheres” because “Dyson Spheres” have no negligible size and because they do not only amplify the brightness of stars (gravitational microlensing) but also de-amplify the brightness of a stars when they travel behind the “Dyson Spheres”.