This decision follows an anomaly where sparks were seen coming off the rocket during its most recent mission. An investigation into the issue could take months, potentially delaying ULA's planned ...

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).

Elon Musk's SpaceX is set to launch a Falcon 9 rocket from Cape Canaveral, Florida. Here are best places to watch liftoff and what time to stream it.