Gravitational lensing is useful to cosmologists because it is directly sensitive to the amount and distribution of dark matter. This is because the amount of light bending is sensitive only to the strength of the gravitational field it passes through*, which is mostly generated by the mass of the dark matter in the Universe.
Union City is a city in Wayne Township, Randolph County, Indiana, United States. As of the 2010 census, the city had a population of 3,584. Union City was a stop along the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, a forerunner of the Pennsylvania Railroad that connected Pittsburgh to Chicago and St. Louis.
The 2016 Union City, Michigan, population is 1,584. There are 1,091 people per square mile (population density). The median age is 34.3. The US median is 37.4. 47.59% of people in Union City, Michigan, are married. 18.97% are divorced.