ASTR 86567

subject Type Homework Help
subject Pages 6
subject Words 677
subject Authors Eric Chaisson, Steve McMillan

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page-pf1
List the three types of objects a star's core can collapse to, and give the mass limits for
each.
What do gamma rays, X-rays, light, and radio waves all have in common?
Galileo's discovery of four moons orbiting ________ provided new support for the
ideas of Copernicus.
Sunspots are ________ poles in the photosphere.
page-pf2
If two stars have the same parallax, but the brighter is magnitude +2.3, and the fainter is
magnitude +3.3, then the fainter star is ________ less luminous.
When decoupling occurred ________ formed.
On Neptune's moon ________, geysers of liquid nitrogen rise 10 km high.
page-pf3
How can the Doppler Effect be used to determine if a storm is forming into a tornado?
The ________-year solar cycle is characterized by a variation in the number of sunspots
through a reversal of the magnetic polarity of the Sun as a whole.
Contrast apparent and absolute magnitudes.
page-pf4
The distribution of Population II stars and globular clusters shows the Galaxy was more
________ in shape when it formed than it is now.
How and why would the noon Sun appear different to an observer on Mercury
compared to one on Earth?
What do all four ring systems have in common?
page-pf5
The classical pinwheel-shaped galaxies are ________, according to Hubble.
The assumption that from any place in the universe the observer would measure the
same physical properties we observe is called the ________.
The water that has been detected on the Moon lies at its ________.
How is proper motion measured?
page-pf6
How would the geometry of a universe with Ωo greater than 1 differ from one with Ωo
less than 1?

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