Tomorrow morning at 10:01 a.m. EST (15:01 UTC), a SpaceX Falcon 9 rocket is scheduled to blast off from launch pad 39A at Kennedy Space Center. NASA TV coverage begins at 8:30 a.m.

This is a pretty big deal, for several reasons: It's SpaceX's first east coast launch since a Falcon 9 exploded at Cape Canaveral last September. It's the first NASA-contracted mission since that accident. And it's the first flight from SpaceX's new launch facility at KSC pad 39A, where Saturn rockets and space shuttles have soared into space since the 1960s.

Here is everything you need to know about the mission.

SpaceX leases pad 39A from NASA.

Two launch pads were built during the Apollo program to host the mighty Saturn V moon rocket: 39A and 39B. The pads were then repurposed for space shuttle flights. After the shuttles retired in 2011, NASA decided they only needed a single pad, since the shuttle's successor vehicle, the Space Launch System, will have a comparatively low flight rate. In 2014, NASA leased 39A to SpaceX on a 20-year agreement. The company is responsible for operating and maintaining the facility at their own expense.