When we see a binary system producing eclipses, we know that the orbit is nearly edge-on
Indicate whether the statement is true or false
T
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What is an asterism?
a. A legend or folklore association to a grouping of stars b. Less formally defined group of stars outside the official 88 constellations c. The council of astronomers who defined the 88 constellations d. The northern pivot point of the celestial sphere e. Constellations close enough to a celestial pole that they do not appear to rise from the east and set in the west
A film of index of refraction n1 coats a surface with index of refraction n2. When n1>n2, the condition for destructive interference for reflected monochromatic light of wavelength ? in air is
A.
.B.
.C.
.D.
.E.
.The process of making an electron less tightly bound to an atom's nucleus is known as
a. excitation. b. Doppler broadening. c. collisional broadening. d. a red shift. e. quantum mechanics.
What is not true about the Milky Way bulge?
A: It's easiest to see its center by looking in radio, IR, or X-rays B: It's actually more like a bar (sorta elongated) C: Young stars are very close to the center D: Old stars are very close to the center E: It contains both young and old stars