Francesco Redi, the founder of the experimental biology, is recognized to be one of the greatest biologists of all time. A biologist, or biological scientist, is a scientist who studies living organisms, often in the context of their environment. Biologists involved in fundamental research attempt to explore and further explain the underlying mechanisms that govern the functioning of organisms. Biologists involved in applied research attempt to develop or improve more specific processes and understanding, in fields such as medicine, industry and agriculture.
Satellites move in a path around the Earth called an orbit. Every satellite must have an orbital path (remember, satellites that travel into deep space to look at distant planets are not true satellites, they are in fact space probes), and the type of path it takes is determined by the physics involved. satellite's orbit works because of a balance between two forces. The orbit is a combination of the satellite's velocity-the speed it is travelling in a straight line-and the force of the Earth's gravitational pull on the satellite.
GPS satellites orbit at a height of about 12,000 miles (19,300 km) and orbit the earth once every 12 hours. About 24 GPS satellites orbit the earth every 12 hours. These satellites are traveling around the earth at speeds of about 7,000 mph (11,200 kph).GPS satellites are powered by solar energy.They have backup batteries onboard to keep them running in the event of a solar eclipse, when there's no solar power.f the geostationary satellites were moving, they would have to move at a speed of about 7,000 mph to maintain a stationary orbit above a fixed point on the earth. That is about the same speed as the GPS satellites that orbit the earth twice a day.