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    Astronomy questions relating to galaxies?

    What is the nearest huge cluster of galaxies to our Local Group? 1)Orion Nebula 2)Hercules Cluster 3)Centaurus Cluster 4)Virgo Cluster 5)Coma Cluster The Tully-Fisher relation exists between the galaxy's luminosity and its 1)size. 2)rotation. 3)age. 4)mass. 5)color.
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    Question dealing with Hubble Law?

    Which of the following paraphrases Hubble Law? 1)The faster the galaxy spins, the more massive and luminous it is. 2)The greater the distance to a galaxy, the fainter it is. 3)The more distant a galaxy is, the younger it appears. 4)The older the galaxy appears to us, the more luminous it is...
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    I desperately need help on this astronomy question please someone?

    Suppose that stars form in our Galaxy at an average rate of 10 per year. Suppose also that all stars greater than 8 solar masses explode as supernovae. estimate the rate of Type II supernovae in our Galaxy in supernovae per year Please help me i so lost ... thank you
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