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Stars spend most of their life span as stars. A) main-sequence B) neutron

Question : Stars spend most of their life span as stars. A) main-sequence B) neutron : 2147430

62) Stars spend most of their life span as ________ stars.

A) main-sequence

B) neutron

C) red giant

D) red supergiant

63) The measure of a star's brightness is called its ________.

A) magnitude

B) luminosity

C) apparent light

D) both A and B

64) The least massive main-sequence stars are ________ in color.

A) blue

B) white

C) yellow

D) red

65) Stars with a surface temperature 3000 K appear ________ in color.

A) yellow

B) blue

C) white

D) red

66) The hottest main-sequence stars are also the ________.

A) reddest

B) youngest

C) dimmest

D) most massive

67) The most dense objects known are ________.

A) black holes

B) white dwarfs

C) neutron stars

D) main-sequence stars

68) Our galaxy is called the ________.

A) Whirlpool

B) Black Eye

C) Milky Way

D) Andromedia

69) The greatest number of galaxies belong to the type known as ________ galaxies.

A) irregular

B) spiral

C) disk

D) elliptical

70) The Milky Way is classified as a(n) ________ galaxy.

A) elliptical

B) disk

C) irregular

D) spiral

71) The red shift refers to ________.

A) a visual effect related to the Doppler effect and stars moving further away

B) the tendency of stars to cool and become red in color

C) the red light emitted by planets as they rotate on their axis

D) the tendency of redder stars to be located in the edges of the universe

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