What is true of irregular galaxies?
A.) They have spiral arms but are smaller than the spiral galaxies.
B.) They have regular, smooth structures.
C.) They are usually larger than spiral galaxies.
D.) They have no defined shape or structure.
Answer: D.) They have no defined shape or structure.
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In the late 18th century, two astronomers, both with the last name of _______________, were the first to attempt to map the shape of the galaxy
Fill in the blank(s) with correct word
How far does light travel in 100 years?
A: 100 miles. B: 100 wavelengths. C: 100 light years. D: 100 astronomical units. E: 100 parsecs.
In addition to the conditions required for any solar eclipse what must also be true in order for you to observe a total solar eclipse?
The Moon's umbra must touch the area where you are located. Earth must be near aphelion in its orbit of the Sun. Earth must lie completely within the Moon's prenumbra. Earth must lie completely within the Moon's umbra.
?The theorem of equipartition of energy states that the energy each degree of freedom contributes to each molecule in the system (an ideal gas) is
A.
B.
C.
D.
E.
