Astronomy: Superstars are stars whose luminosity is higher than that of ordinary stars (main sequence stars) but lower than that of Supergiant star. After leaving the main sequence region, the volume of stars expands, the surface temperature decreases, and they become very bright. Because these stars are about 10 to 100 times that of the sun, they are called giants. On the hero map, it is above the main sequence and below the Supergiant star branch. The luminosity level is 2 ~ 3. The surface temperature ranges from 2500 K to 7000 K, and the temperature of a few blue giant is higher, while the temperature of cold giant stars is the lowest, only 1000 K. The mass of ordinary red giant stars is 1.5 ~ 4 times that of the sun, and the radius is about10 times that of the sun, which is a relatively late stage in the evolution of stars. In the Ming Dynasty in China, the saying of superstar has been widely existed. In the Biography of Sacrificing Yuan Huan in Daozhou, Huang Ming, "On the eve of Yuan Keli's death, a superstar fell to the southwest and fell to the ground with a bang." A star with luminosity level II is called a bright giant. The distribution area of bright giant stars on Herro diagram is between Supergiant star and giant stars. For bright giant stars with a certain surface effective temperature, their luminosity is stronger than that of giant stars but weaker than that of Supergiant star. Famous bright superstars include Orion δ, Niigata Niigata Liangzi, Scorpio 19, Leo ε, Auriga ι, Southern Cross γ and so on.
Another interpretation: Metaphor is a great man who has made outstanding achievements in some aspects. Now it is often used to refer to people who have made outstanding achievements in music or sports, such as Michael Jackson, Michael Jordan, Yao Ming and Beckham.