Monday
March 2, 2015

Homework Help: Astronomy

Posted by Anonymous on Saturday, November 20, 2010 at 11:07pm.

The apparent brightness of a Cepheid variable star in a far-away galaxy is measured to be 640,000 times fainter compared to an equivalent star 2,000 light years away from the Sun in our Galaxy. Assuming that there is no light absorption between galaxies, what is the distance to the host galaxy of the Cepheid?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Science need help ?????/// - An astronomer observes two galaxies, A and B, which...
Physics - Our Milky Way galaxy is very similar to our neighboring galaxy ...
physics - astronomical observations of our milky way galaxy indicate that it has...
Physical Science - Galaxy A is 600 million light years from earth. Galaxy B is ...
Astronomy - A galaxy is receding away from us with a recession velocity of 100,...
Science - If one star is at a distance of 100 light years, how far away would a ...
astronomy - Imagine that you live in a distant galaxy far far away. This galaxy ...
Physics - A star of mass 2.0 1028 kg that is 1.6 1020 m from the center of a ...
physics - A star of mass 2.0 1031 kg that is 4.8 1020 m from the center of a ...
physics - The sun rotates around the center of the milky way galaxy at a ...

Members