Calculating the motion of stars and determining which stars were, are, and will be brightest in the sky are discussed. If the star Sirius emits 23 times more energy than the Sun, why does the Sun appe...Calculating the motion of stars and determining which stars were, are, and will be brightest in the sky are discussed. If the star Sirius emits 23 times more energy than the Sun, why does the Sun appear brighter in the sky? Can you suggest a reason for the difference between this answer and the answer to the previous question? (Hint: Look at the luminosities.) Is there any tendency for a correlation between temperature and luminosity?
