It should be noted that geosynchronous and geostationary are not the same. Geosynchronous does mean that it orbits the earth at 1 rotation per day, but depending on inclination and/or eccentricity, it doesn’t stay still, it will draw out a slow loop or figure-8 from any given observer’s perspective. The latter thing you’re describing is a geostationary orbit; satellites in a geosynchronous orbit above the equatorial plane, with 0 inclination and eccentricity, stay at exactly the same spot in the sky at all times, and are said to be geostationary, or to be in GEO (rather than GSO).
It should be noted that geosynchronous and geostationary are not the same. Geosynchronous does mean that it orbits the earth at 1 rotation per day, but depending on inclination and/or eccentricity, it doesn’t stay still, it will draw out a slow loop or figure-8 from any given observer’s perspective. The latter thing you’re describing is a geostationary orbit; satellites in a geosynchronous orbit above the equatorial plane, with 0 inclination and eccentricity, stay at exactly the same spot in the sky at all times, and are said to be geostationary, or to be in GEO (rather than GSO).
It should also be noted that the documentary Independence Day showed us that all our satellites will be used against us when the aliens invade.
"We will not go slowly into the night! "