1. Suppose that Cepheids did not exist and there were no other standard candle technique that worked at the same distances. Which statement would be true?
a. We would not be able to measure the distances of distant galaxies.
b. We would still be able to measure the distances of distant...
A solar model is used to calculate the expected temperature and density at all depths within the Sun. These results are then used to calculate the expected fusion rate within the Sun. We have confidence that the model is correct because it agrees with the observed characteristics of the Sun...