Activity: Expanding universe

Cosmology is the study of the Universe which up to now (in this course) has been modeled by Newton"s universal law of gravitation but this had some problems for scientists 100 years ago.100 years ago it was accepted that the Universe was static but how can it be static if gravity is acting on everything.The Universe was thought to be static because it doesn"t move in the time frame of any observations but in the 1920"s...

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