SpaceX canceled Starship's first orbital flight just over a minute before spacecraft launch. In the online broadcast, it was announced that a new launch attempt would be made within 48 hours.

As Elon Musk tweeted, the reason for the delay is pressure valve issues..

[see_also ids\u003d"

“The pressure valve appears to be frozen, so if it doesn’t work soon, the launch will not take place today,” the businessman wrote before the official announcement of the cancellation of the launch.

A pressurant valve appears to be frozen, so unless it starts operating soon, no launch today.

— Elon Musk (@elonmusk) April 17, 2023.

SpaceX tweeted that "

Standing down from today's flight test attempt; team is working towards the next available opportunity.

— SpaceX (@SpaceX) April 17, 2023.

In preparation for launch, SpaceX noted that during test flights like this one, success is measured by how much new information was learned, which helps in further development of the system..

Earlier, SpaceX founder Elon Musk estimated the success rate of the first Starship test flight at 50%.. According to the businessman, there is no guarantee that the ship will reach orbit, but the first launch "

Starship is being developed as a reusable spacecraft to deliver cargo and people to the Moon, Mars and other deep space objects.. NASA has already signed a contract with the company to deliver people to the moon with it as part of the Artemis program..

The vehicle consists of two fully reusable elements: a first-stage booster called Super Heavy and a 50-meter-tall spacecraft known as Starship.. Both will be powered by SpaceX's next-generation Raptor engine - six for Starship and about 30 for Super Heavy..

On the night of May 6, 2021, SpaceX successfully conducted a test flight of the Starship prototype. The ship repeated the testing program for Starship prototypes SN8 and SN9, which crashed on landing after a suborbital flight, as well as SN10, which exploded seven minutes after a successful landing due to damage received..