Posts by Jim Shaffer
The universe is approximately 13.8 billion years old, there are at
The universe is approximately 13.8 billion years old, there are at least 100 billion galaxies in the universe, there are approximately 100 billion st...
The universe is approximately 13.8 billion years old, there are at least 100 billion galaxies in the universe, there are approximately 100 billion st...
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