A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day).

One of the most crucial elements of a forecast is sky conditions. Whether it's sunny, partly cloudy, or storming. Typically, we use radar to detect rain, but when it is not raining, how do we observe ...