Tech

Nuclear power is the use of nuclear reactions that release nuclear energy to generate heat, which most frequently is then used in steam turbines to produce electricity in a nuclear power plant.  Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. the vast majority of electricity from nuclear power is produced by nuclear fission of  uranium  and  plutonium . Nuclear energy second largest  low-carbon power  source after  hydroelectricity , As of  April 2018 Nuclear power has one of the lowest levels of fatalities per unit of energy generated compared to other energy sources. Coal, petroleum, natural gas and hydroelectricity each have caused more fatalities per unit of energy due to air pollution and  accidents .

satellite: A satellite is a moon, planet or machine that orbits a planet or star. for example, Earth is a satellite because it orbits the sun. likewise, the moon is a satellite because it orbits the Earth. Earth and Moon are examples of the natural satellites. nowadays thousands of artificial or man-made, satellite orbits the Earth. Importance of satellite:  Human beings can see only a certain area or specific place, but Birds can see the large area of the earth's surface as compared to human beings, but a satellite can see or watch a large area as compared to these (human beings or birds). so that satellites can collect more data and information about the Earth's.