The proper interpretation of the Hubble law (which relates the redshift of a galaxy to its distance) is that as time goes on, galaxies are____.
a. staying relatively still in space while the space between the galaxies contracts
b. moving away from a common center in space that is neither expanding nor contracting
c. staying relatively still in space while the space between the galaxies expands
d. moving away from a common center while the space between the galaxies expands
e. moving toward a common center in space that is neither expanding nor contracting
Question 2
The pink color of the chromosphere is produced by the combined light of three emission lines of hydrogen: ____.
a. red, magenta, and violet
b. red, blue, and violet
c. indigo, blue, and red
d. blue, green, and yellow
e. green, blue, and violet
The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport.
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Spitzer Telescope Picture of a galaxy
Grace Service, a YMCA missionary, explained that these porters worked at the base of Mount Omei in S
Dread Scott. What Is the Proper Way to Display a U.S. Flag?
The relationship between recombination frequency and physical distance between genes