Astronomers use new model of dust in galaxies to remeasure the total energy output of stars in the universe
Thursday, May 15, 2008 - 14:35
in Astronomy & Space
Anyone gazing up on a dark clear night is greeted by the spectacle of thousands of powerful fusion reactors - the stars. These balls of extremely hot gas are generating unimaginably large quantities of energy. Even the stars within a cube of "only" one light year on a side, taken at a random position in the universe, generate on average 40 quadrillion kilowatthours in one year.