Scientists once believed that the structure of the universe had changed very little. Which statement best supports the theory that the universe is constantly changing?
Earth and other planets move around the Sun.
Earth and other planets move around the Sun.
The average distance between galaxies is increasing.
The average distance between galaxies is increasing.
Other planets in the solar system have more moons than Earth.
Other planets in the solar system have more moons than Earth.
More galaxies other than the Milky Way have been discovered.
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Scientists once believed that the structure of the universe had changed very little. Which statement...
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