In any particular place on Earth, certain constellations are visible in the evening only at certain times of the year because ________.
A) our evening view of space depends on where Earth is located in its orbit around the Sun
B) some constellations are circumpolar
C) on any particular night, we can only see stars that are directly opposite (180 degrees away from) the Sun in the sky
D) during some times of year, some constellations drop below the southern horizon
Question 2
The maximum mass of a white dwarf is ________.
A) limitless; there is no theoretical limit to the maximum mass of a white dwarf
B) about the mass of our Sun
C) about 1.4 times the mass of our Sun
D) about 3 times the mass of our Sun
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