levon15
levon15
23.10.2020 • 
Chemistry

Scientists have documented that galaxies they observe seem to be moving farther away. Which concept best explains this? A.black holes because an unseen force is pulling objects away from the center of the universe
B.big bang theory because the universe exploded from a single point in space and is always expanding
c.gravitational force because objects are being drawn toward the edges of the universe
D.
solar system because the mass of the Sun pushes other galaxies away

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