Evidences for the Dark Matter
Dark matter is known as the “missing mass,” dark matter’s existence was first inferred by Swiss American astronomer Fritz Zwicky, who in 1933 discovered that the mass of all the stars in the Coma cluster of galaxies provided only about 1 percent of the mass needed to keep the galaxies from escaping the cluster’s gravitational pull. In this blog we will discuss 5 different pieces of evidence for the existence of the dark matter BENDING OF LIGHT Gravitational lensing:- The amount of bending is proportional to the mass of the object that causing the bending, Light gets bent due to the mass of the object. In this image light from the distant galaxy is lensed due to galaxy clusters, so we get lensed images here on the earth. But we are getting an extra lensed image than usual but the Amount of bending is proportional to the mass of the object, so there is evidence of missing mass, We get the factor of the Dark matter here. We can derive the formula for this As ROTATIONAL CURVE The f