SpaceX resigned this week to launch a NASA cargo air cargo mission for 24 hours.
The uncrewed Dragon resupply ship will now be launched at the International Space Station on Wednesday at 3:59 am EDT (0759 GMT) from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida, according to SpaceX and NASA. SpaceX has tested the Falcon 9, which will launch a mission on Saturday (April 27).
"Static Fire Test Falcon 9 Complete – Targeting May 1 from Pad 40 in Florida for the 17th Dragon Mission at @Space_Station," Representatives of SpaceX said in the Twitter update mission.
Related: How SpaceX's Dragon Space Capsule Works (Infographic)
A one-day start ticket followed by a four-day delay mission (it was initially scheduled to launch April 26) NASA and SpaceX "due to stations and orbital mechanical constraints," NASA officials said at the time.
SpaceX officials said the company would use these four extra days for start-up and static Falcon 9 fire tests, which briefly fired first-stage engines. Static fire tests are standard SpaceX activities before each start.
The upcoming Dragon Cargo mission will be SpaceX 17th for NASA. The spacecraft will deliver more than £ 5,500. (2,495 kilograms) of fresh supplies, experimental hardware and other equipment to ship 59 astronauts currently on space station.
SpaceX also has an astronaut flying contract for NASA using the new Crew Dragon spacecraft, which launched its first unmanned flight in March. It is expected that a Crew Dragon system interruption test will be conducted this year.
However, before SpaceX can continue its flight interruption test, the company must complete an anomaly investigation on April 20 during the Cort Dragon test. This anomaly occurred when SpaceX tested eight SuperDraco Crew Dragon engines at a test station in Landing Zone 1, one of two missile airfields on the Cape Canaveral Shuttle.
Meanwhile, SpaceX is also preparing for the next big mission: another massive Falcon Heavy megarocket.
Last week, SpaceX successfully tested the pivotal stage of Falcon Heavy, which will be used to launch the US Air Force Space Test Program-2. This mission will include a variety of useful US Air Force services, NASA, the planetary company and other customers.