Dark matter is observed by the gravitational effect that  it has on radiation and the visible universe. The gravitational  force it has from dark matter plays a critical role in the shape of  the galaxies orbit and the because of the hot gases in the groups  of galaxies.
The Angus breed is perhaps the most used, most well-known breed of beef cattle in the U.S. With origins in northeast Scotland, Angus, also known as Black Angus, is popular among Brits and Americans and was first imported to the United States in 1873.
Aberdeen-angus is the worldâs finest beef breed with world recognition for its quality meat and easy cared for cattle. Find out more about the breed and the benefits of breeding aberdeen-angus cattle for commercial beef farmers.1.berdeen-Angus cattle are famous for their easy to handle, docile nature. Ease of calving and great maternal attributes minimises much of the stress associated with breeding cattle. Beef farming has its challenges and we are all seeking an easier life.