12-04-2019
Biology

contestada

why astronomers theorize that most of the matter in galaxies and clusters of galaxies is dark matter

Respuesta :

tinakosito tinakosito

15-01-2021

Answer:

Galaxies are spinning faster than they should based on their observable / measurable mass. ... The gravitational pull of mass and the expansion due to the energy left over from the Big Bang and Dark Energy

Explanation:

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