(CNN)If you like watching humans blast things into space, you could be in for a feast this week.
Space companies intend to launch four rockets, if conditions are right -- and all of them are expected to be shown online. One, the United Launch Alliance rocket launch, has already been canceled due to high ground winds, the company said.
Here's a schedule of what else is launching, and when.
9:07 a.m. ET Wednesday: SpaceX
What: SpaceX's Falcon 9 rocket is to send up a GPS satellite for the US Air Force. This initially was scheduled for Tuesday morning, but the onboard flight computer aborted the launch, SpaceX said during a live webcast. The company is aiming for the next, 26-minute launch window that begins at 9:07 a.m. Wednesday.
Launch site: Florida's Cape Canaveral Air Force station
How to watch: SpaceX's website
11:37 a.m. ET Wednesday: Arianespace
What: French company Arianespace is using a Soyuz rocket to take a satellite into space for the French Defense Ministry. This launch initially was scheduled for Tuesday, but was delayed because of weather conditions.
Launch site: The Guiana Space Center in French Guiana
How to watch: arianespace.com
Wednesday TBD: Blue Origin
What: This 10th test of Blue Origin's New Shepard rocket system is expected to send nine NASA-sponsored research and technology payloads into space. The launch was supposed to happen Tuesday, but it was scrubbed because of a "ground infrastructure issue." The company is trying to determine whether it can launch Wednesday.
Launch site: Near the town of Van Horn in West Texas
How to watch: BlueOrigin.com