Q.1 Which Star is called Earth’s satellite? Q.2 What is the Orbital period of Moon? Answer:-1 Earth has many satellites orbiting it, but the only significant natural satellite that orbits the Earth is the moon. The Union of Concerned Scientists (UCS) maintains a listing of all man-made satellites orbiting the Earth, which includes more than 1,000 operating satellites. Full Answer More than 500 of these man-made satellites are operated by the United States, with more than 100 also coming from Russia and China. The UCS Satellite Database is a free and comprehensive database that allows people to find information about the various satellites including altitude and mission. Users are able to find answers to popular questions, such as the number of satellites a given country has in orbit and their specific usage. The moon is Earth's only significant natural satellite, and it is believed to be approximately 4.5 bill...