ASTR 17917

subject Type Homework Help
subject Pages 6
subject Words 719
subject Authors Eric Chaisson, Steve McMillan

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page-pf1
The ________ Space Telescope still gives us the highest resolution optical images.
Why is the light from near a black hole red shifted?
The Maunder Minimum refers to a period of sustained solar ________ from 1645 until
about 1715.
The age of the whole Galaxy has been found from studies of its oldest stars in the
________ clusters that orbit in the Halo.
page-pf2
How were the three planets orbiting the millisecond pulsar found?
Give at least two advantages of the Kelvin temperature scale for astronomers.
The mean distance between the Earth and Sun is called the ________.
page-pf3
The center of the Milky Way lies in the direction of the constellation ________.
The presence of ________ planets orbiting it shows us the Sun belongs to Population I.
Why do quasars die out over time?
The "guest star" observed by the Chinese in 1054 is now known to have been a
________.
page-pf4
Explain what types of information can be obtained from a line spectrum.
Why were the Russian Venera spacecraft so important to our understanding of Venus?
What did Galileo discover through his telescope when he looked at Jupiter, and how did
it refute the Ptolemaic model?
page-pf5
How does counting craters help us estimate the age of a moon's surface?
Fraunhofer was the German astronomer who first noted ________ lines in the Sun's
spectrum.
Where do the majority of naked-eye stars fall on the H-R diagram? Is this true of the
majority of stars close to our Sun as well?
page-pf6
Name four ways that the interstellar medium reveals its presence.

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