Well, a large part of why dark matter is seen as an extension of gravity is how it is studied by scientists today. Dark matter was first “observed” by Fritz Zwicky of Caltech in the year 1933. Zwicky observed galaxy clusters and used mathematical calculations to attempt to determine the mass of each galaxy by observing its velocity of orbit. An issue arose when Zwicky ended up calculating the presence of more mass than could be accounted for, but these results were pushed to the side after publication due to a lack of understanding of galaxy clusters at the time. About forty years later, Vera Rubin, along with her coworkers, observed that galaxies move faster than expected when visually observing them through telescopes (Discovery). Why this is a problem for the amount of matter within the galaxy might not be so obvious, but it can easily be explained by the equation for gravity between two
Well, a large part of why dark matter is seen as an extension of gravity is how it is studied by scientists today. Dark matter was first “observed” by Fritz Zwicky of Caltech in the year 1933. Zwicky observed galaxy clusters and used mathematical calculations to attempt to determine the mass of each galaxy by observing its velocity of orbit. An issue arose when Zwicky ended up calculating the presence of more mass than could be accounted for, but these results were pushed to the side after publication due to a lack of understanding of galaxy clusters at the time. About forty years later, Vera Rubin, along with her coworkers, observed that galaxies move faster than expected when visually observing them through telescopes (Discovery). Why this is a problem for the amount of matter within the galaxy might not be so obvious, but it can easily be explained by the equation for gravity between two