If the Sun's motion along the ecliptic were reversed, how would its daily motion
appear?
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It would continue to rise in the east and set in the west.
Fifteen years ago, a quasar was observed that was found to be located 8 billion light
years
away. If our universe is approximately 15 billion years old, when did the quasar emit
the light that we observe?
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8 billion years ago
,The eventual fate of our Sun is to
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become a steadily cooling white dwarf.
On an H-R diagram, stars at the same temperature are found
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aligned vertically (i.e., one above the other).
Our Sun will not become a nova because this only happens to stars
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with a binary companion.
Through how many degrees does Earth rotate in exactly 24 hours?
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more than 360
, If you analyze the light from a low density object (such as a cloud of interstellar gas),
which type of spectrum do you see?
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bright line emission spectrum
You observe two stars over the course of a year (or more) and find that both stars
have
measurable parallax angles. Star X has a parallax angle of 1 arcsecond. Star Y has a
parallax angle of ½ an arcsecond. How do the distances to the two stars compare?
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Star X is twice as far away as star Y.
Black holes are formed by
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supernovae from the most massive stars.
How much time is there between when a star rises and when it sets?
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appear?
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It would continue to rise in the east and set in the west.
Fifteen years ago, a quasar was observed that was found to be located 8 billion light
years
away. If our universe is approximately 15 billion years old, when did the quasar emit
the light that we observe?
Give this one a try later!
8 billion years ago
,The eventual fate of our Sun is to
Give this one a try later!
become a steadily cooling white dwarf.
On an H-R diagram, stars at the same temperature are found
Give this one a try later!
aligned vertically (i.e., one above the other).
Our Sun will not become a nova because this only happens to stars
Give this one a try later!
with a binary companion.
Through how many degrees does Earth rotate in exactly 24 hours?
Give this one a try later!
more than 360
, If you analyze the light from a low density object (such as a cloud of interstellar gas),
which type of spectrum do you see?
Give this one a try later!
bright line emission spectrum
You observe two stars over the course of a year (or more) and find that both stars
have
measurable parallax angles. Star X has a parallax angle of 1 arcsecond. Star Y has a
parallax angle of ½ an arcsecond. How do the distances to the two stars compare?
Give this one a try later!
Star X is twice as far away as star Y.
Black holes are formed by
Give this one a try later!
supernovae from the most massive stars.
How much time is there between when a star rises and when it sets?
Give this one a try later!
