Updated 6:15 p.m. ET Wednesdays — The rocket launched successfully on Wednesday.
The planned barge landing of the rocket was called off because of high waves.
A 1990s satellite that's been in storage is set to get a new life monitoring potentially dangerous emissions from the sun.
The Deep Space Climate Observatory, or DSCOVR, is scheduled to be launched by SpaceX on Monday from Cape Canaveral, Florida. The launch will also give the commercial space company a chance to try to accurately land its Falcon 9 rocket — a step important to the development of cost-effective reusable rockets.