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.
General Unionville Information Tuscola County where Unionville resides is 913.82 square miles. The resident population of this county is 58,266 and has a population rank of 821 out of all the places in the United States. Unionville has a total of 605 people and of those residents there are 292 males and 313 females. The median age of the male population is 33.8 and the female population is 35.9. There are approximately 706 births each year and around 519 deaths. The race breakdown of the population in Unionville varies per year, but currently 594 are one race and 11 are two or more races.