Stars Stars look like pinpoints of light, even when seen through the world's most powerful telescopes. And yet astronomers can determine how much stars weigh. Looking out into the universe, astronomers can observe these double star systems.
Astronomers believe that a single set of equations governs the structure of all stars.
And they believe that the mass of a star determines its evolution. And the temperature estimate leads back to an estimate of the star's mass. We're Block and Byrd for Earth and Sky.