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cosmic background radiation indicates what?

the universe is expanding.

the universe is contracting.

the universe is at rest.

the universe will explode.

question 3

if the universe were contracting, what would happen to light from other galaxies as it reached earth?

it would be brighter.

it would be dimmer.

it would be blue shifted.

it would be red shifted

how do scientists determine motion of objects in the universe?

big bang theory

doppler effect

heliocentric theory

geocentric theory

question 5

what does a blue shift in light from stars indicate?

the stars are moving closer.

the stars are moving farther away.

the stars are stationary.

the stars are moving randomly.