When we look at stars in the sky, we see a wide range of brightness. This job explains the factors that would make one star appear brighter than another.
This job computes star distances. - Two stars A and B have the same Luminosity and Surface Temperature which turn out to be 3 times the Luminosity of the Sun. Star A is 10 L-Y away from the Sun and Star B is 150 L-Y away from the Sun. W ...
Star informationis listed. - What information do the temperature, composition and motion of the stars provide?
Cephid variable stars - Explain why Cephid variable stars are so useful for determining the distances of galaxies.
Calculate the distance of this star. - 8) Sirius is one of our nearest and brightest neighbors at a distance of 2065 pc. By a careful comparison of the spectral lines, a second star is known to have an intrinsic brightness, or luminosity, ...