A "nova" is the event that creates a planetary nebula
a. True
b. False
Indicate whether the statement is true or false
False
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Which moons of our solar system are sometimes called the Galilean moons?
A) the four largest moons of Jupiter: Io, Europa, Ganymede, and Callisto B) the two largest moons in the solar system: Ganymede and Titan C) the moons that orbit their planet "backward" compared to their planet's rotation, such as Neptune's moon Triton D) the moons orbiting Uranus, which was once named "planet Galileo"
A dust particle has a rest energy (mass) of 1.0 ?g. In joules, this rest energy is closer to:
A. 1017 J B. 1011 J C. 108 J D. 10-3 J E. 10-23 J F. Other (specify)
What celestial line is a product of the Earth's orbit around the Sun?
A) Ecliptic B) Prime Meridian C) Equator D) Galactic Plane E) Analemma
The Lyman series is formed by electron transitions in hydrogen that
A) begin on the n = 2 shell. B) end on the n = 1 shell. C) end on the n = 2 shell. D) begin on the n = 1 shell. E) are between the n = 1 and n = 3 shells.