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Once a star ejects a planetary nebula, it becomes a white dwarf.

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6 years ago

Once a star ejects a planetary nebula, it becomes a white dwarf.

Once a star ejects a planetary nebula, it becomes a white dwarf.

a. True
b. False
Indicate whether the statement is true or false

Question 2

What observational evidence do we have that quasars are the centers of very distant galaxies?

What will be an ideal response?

Question 3

Stars less massive than 0.4 solar mass never become giant stars.

a. True
b. False
Indicate whether the statement is true or false

Question 4

Why are there few quasars at low redshifts and at high redshifts but many at redshifts of about 2?

What will be an ideal response?

Question 5

Planetary nebulae are sites of planet formation.

a. True
b. False
Indicate whether the statement is true or false

Question 6

Why should we expect quasars to be small? How small should we expect them to be?

What will be an ideal response?

Question 7

Giant and supergiant stars are rare because that stage of stellar evolution is short.

a. True
b. False
Indicate whether the statement is true or false

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kq Author

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6 years ago

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