A full Moon always occurs
a. on the 15th of every month.
b. when the Moon is at right angles to the direction of the Sun.
c. when the Moon is closer to Sun than the Earth is.
d. when the Moon is directly opposite the position of the Sun.
d
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The solar constant is a measure of
a. the amount of solar energy reaching Earth. b. the length of the sunspot cycle. c. the period of rotation of the Sun's equator. d. the average number of sunspots seen during the Maunder minimum. e. the Sun's mass.
An astronomer surveying the sky toward a random region of the sky finds, by chance, the most distant galaxy ever detected. This is an example of
A) nonscience B) discovery science C) hypothesis-driven science D) pseudoscience
Moving clocks are observed to run more slowly than clocks that are at rest in the observer's own frame fo reference
Indicate whether the statement is true or false
Why is the cause of the acceleration of the universe called "dark energy"?
A) Dark energy and dark matter are just two forms of the same thing. B) The term dark energy was the one that caught on with other astronomers. C) We're pretty sure that whatever is causing the acceleration is pure evil.