Our Sun and the entire Solar System orbits the center of the Milky Way Galaxy. It is somewhat less than ___ from the center of the Milky Way.
a. 20,000 LY
b. 30,000 LY
c. 30,000 LY
d. 40,000 LY
e. None of the above.
30,000 LY
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As Earth evolved with life, an oxygen abundance of only 0.1 percent would have created a(n) _______________, protecting organisms from the Sun's ultraviolet radiation
Fill in the blank(s) with correct word
Stars in the upper right part of the Hertzsprung-Russell diagram are always ____ when compared to stars near the middle of the diagram
a. cooler b. brighter as seen from Earth c. larger d. smaller e. more massive
A type Sa galaxy has a larger ________ than type Sc
A) nuclear bulge B) halo C) mass D) number of stars E) spiral structure
A turntable 45 cm in diameter starts from rest and makes its first complete revolution in 3.4 s with constant angular acceleration. If it maintains the same acceleration, how long will it take the turntable to make its second complete revolution?
What will be an ideal response?