1. "Dyson ball" is a theory put forward by Freeman Dyson in 1960.
 2. The so-called "Dyson sphere" is actually an artificial object with a diameter of 200 million km, which is used to wrap stars to exploit stellar energy.
 3. This is a natural nuclear fusion reactor using stars as power sources.
 4. Dyson ball is a huge man-made structure in the imagination, which was proposed by Mr. Freeman Dyson.
 5. Such a "sphere" is composed of satellites circling the sun, completely surrounding the star and obtaining most or all of its energy output.
 6. Dyson believes that such a structure is the logical necessity of a civilization that has existed for a long time in the universe and whose energy demand is rising, and he suggests searching for such an artificial celestial body structure in order to find extraterrestrial super civilizations.
 7. Since then, various designs, including the construction of artificial celestial bodies or a series of such structures to encircle the sun, have been constantly proposed by some fanciful engineers or science fiction novels and named "Dyson ball".
 8. These subsequent ideas did not stop at the solar collection station - many engineering designs also included the construction of human colonies and industrial bases.