The Local Group is an example of a
A) galaxy cluster
B) galaxy
C) supercluster
D) planetary system
D
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A convenient method to write very large numbers is to use scientific notation
a. True b. False Indicate whether the statement is true or false
The Inquisition condemned Galileo for heresy in 1616
a. True b. False Indicate whether the statement is true or false
Which was the source of lava during the flooding stage of the Moon's development?
a. moonquakes and tectonic shifts b. lower crust and upper mantle c. the deep core d. volcanoes e. impacts
Degeneracy pressure stops the crush of gravity in all the following except
A) a very massive main-sequence star. B) a white dwarf. C) a neutron star. D) a brown dwarf. E) the central core of the Sun after hydrogen fusion ceases but before helium fusion begins.