star cultural definition

An object in the sky that sends out its own light, generated by nuclear reactions in its center. There are many billions of stars in our galaxy, the Milky Way.

• Our own sun is a medium-sized star.
• Each star has a definite lifetime and dies when it uses up its supply of fuel. (See black hole, neutron star, supernova, and white dwarf.)
• All chemical elements heavier than helium are created in the center of stars and are returned to space when the star dies.
• New stars are forming constantly.