Astronomy Practice Exam

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What does a geosynchronous orbit allow a satellite to do?

Travel around the Earth at high speed
Remain in the same position above the Earth
Orbit the Earth in a polar trajectory
Change orbits frequently

The correct answer is: Remain in the same position above the Earth

A geosynchronous orbit is a specific type of orbit in which a satellite takes approximately 24 hours to make one complete orbit around the Earth. This synchronization with the Earth's rotation means that the satellite appears to remain fixed in the same position relative to the surface of the Earth, at least on a daily basis. This characteristic is particularly useful for communication satellites, weather satellites, and some surveillance satellites, as they can maintain a constant line of sight to a specific area on the Earth’s surface. Given this definition, the correct answer reflects the primary advantage of a geosynchronous orbit: the satellite's ability to stay positioned over the same geographic location, allowing for consistent data collection and relay with minimal disruption.