1) What are the primary differences between Elliptical and Spiral galaxies?
One of the major differences between the two galaxies is the shape of the two. Just as the elliptical
galaxy sounds it takes the shape of
1) A .1 solar mass star will eventually become either a brown Dwarf or red dwarf, a 1 solar mass star will
become a white dwarf, and a 20 solar mass star will become a neutron star. The lifetime of these stars can
1. Explain why an atmosphere is important to the physical appearance of the surface of terrestrial
An atmosphere is critical to the physical appearance of a terrestrial planets surface because an
April 7, 2016
Unit 25 #13
If the galaxy was assumed to be produced by hydrogen, it would be slightly blue shifted
since the galaxys spectral line of 655.0 nm is less than that of hydrogens, 656.3 nm. If it were
February 16, 2016
Unit 2 #12
It takes light approximately 8.3 minutes to travel from the Sun to the Earth.
Unit 8 #7
A first quarter moon rises at midnight and sets at noon.
Unit 10 #11
April 21, 2016
Unit 61 #12
From the graph, a pre-main-sequence star looks as though it shrinks by a factor of about 2
as it forms a one solar mass star.
Unit 67 #16
Unit 68 #13
March 24, 2016
Unit 45 #16
A category 5 hurricane on Earth is classified as having winds that are greater than 157
mph. The Great Red Spot has wind speeds twice that. Both hurricanes and the Great Red Spot
May 5, 2016
Unit 75 #14
Recession velocity is directly proportional to the redshift by = . In addition, from
Hubbles Law = , the recession velocity is proportional to the distance, which would then
also be proport