You may be familiar with hibiscus, known as âsour teaâ in Iran, a delicious and refreshing summertime drink. Originally from Angola, hibiscus is now cultivated throughout tropical and subtropical regions, especially in Sudan, Egypt, Thailand, Mexico, and China.
High Earth Orbit. When a satellite reaches exactly 42,164 kilometers from the center of the Earth (about 36,000 kilometers from Earthâs surface), it enters a sort of âsweet spotâ in which its orbit matches Earthâs rotation.his special, high Earth orbit is called geosynchronous. A satellite in a circular geosynchronous orbit directly over the equator (eccentricity and inclination at zero) will have a geostationary orbit that does not move at all relative to the ground.
Depending on the job they have to do, we put satellites into different orbits. Some orbit the Sun, but most orbit the Earth. Three very useful types of orbit are a polar orbit, a geostationary orbit (GEO) and a low Earth orbit (LEO). These satellites are in orbit above the Earth's equator. They stay above the same location on Earth. They are used for telecommunications, television transmission and for navigation. Low Earth orbit (LEO) A satellite has a Low Earth Orbit when it orbits somewhere between 300 and 800 km above the Earth's surface. These satellites only take about 90 minutes to go around the Earth. They are ideal for making observations of the Earth's resources.