Why did SpaceX abort Starship Super Heavy launch at T-0 second? Elon Musk answers
SpaceX's biggest launch of the year came to an unexpected halt at the final moment of the countdown. Elon Musk has revealed what happened and what comes next for Starship.
SpaceX's much-awaited 13th test flight of Starship ended before it even began.
Just as the world's most powerful rocket was about to lift off from Starbase in South Texas during the early hours of Friday, July 17, the countdown reached T-0, and then stopped.
Instead of launching into the sky, the fully stacked Starship and Super Heavy remained firmly on the launch pad after an automatic abort was triggered in the final moments of the countdown.
SpaceX founder Elon Musk soon explained why the company called off the launch and what is to follow.
WHAT WAS STARSHIP LAUNCH CANCELLED?
According to Musk, the launch was automatically aborted because not all the Super Heavy booster's Raptor engines ignited as expected during the startup sequence.
Posting on X shortly after the scrub, Musk wrote: "Some of the engines didn't start, triggering an automatic launch abort. Now offloading propellant."
He later added that SpaceX will replace two Raptor engines "for extra confidence," with the next launch attempt likely next week. A final revised date and time is yet to be decided.
The automatic abort system that stopped the launch from happening, is designed to halt space vehicles from taking off instantly if any critical parameter falls outside safe limits.
In the case of SpaceX's Flight 13, it prevented the rocket from lifting off with an incomplete engine ignition sequence.
WHAT IS FLIGHT 13 AND WHAT WILL IT DO?
Flight 13, also known as Integrated Flight Test-13 (IFT-13), was scheduled to build on lessons from previous Starship missions.
The test plan included deploying next-generation Starlink satellite simulators, demonstrating an in-space Raptor engine relight, and carrying out controlled splashdowns of both the Super Heavy booster and the Starship upper stage.
Each of these milestones is aimed at proving technologies that will eventually support routine satellite launches, lunar missions under Nasa's Artemis programme and, ultimately, human missions to Mars.
WHAT IS STARSHIP AND WHY IS IT IMPORATANT?
Standing nearly 400 feet tall, Starship is the largest and the most powerful rocket ever built.
The launch system consists of the Super Heavy booster, powered by 33 Raptor engines, and the Starship upper stage, which uses six Raptor engines for spaceflight.
Unlike conventional rockets, both stages are designed to be fully reusable, something that remains a key part of SpaceX's strategy to significantly reduce the cost of commuting to space.
Although the countdown ended in a last-second scrub, such launch aborts are a routine part of rocket development. They are designed to prioritise safety over schedule and allow engineers to identify potential problems before a vehicle leaves the ground.
After completing 12 test flights, Starship has already demonstrated major milestones, including successful stage separation, controlled atmospheric re-entry and the catch of the returning Super Heavy booster using Starbase's launch tower arms.
SpaceX engineers will now inspect the affected engines, replace the two Raptors identified by Musk and prepare the vehicle for another launch attempt in the coming days.
SpaceX's much-awaited 13th test flight of Starship ended before it even began.
Just as the world's most powerful rocket was about to lift off from Starbase in South Texas during the early hours of Friday, July 17, the countdown reached T-0, and then stopped.
Instead of launching into the sky, the fully stacked Starship and Super Heavy remained firmly on the launch pad after an automatic abort was triggered in the final moments of the countdown.
SpaceX founder Elon Musk soon explained why the company called off the launch and what is to follow.
WHAT WAS STARSHIP LAUNCH CANCELLED?
According to Musk, the launch was automatically aborted because not all the Super Heavy booster's Raptor engines ignited as expected during the startup sequence.
Posting on X shortly after the scrub, Musk wrote: "Some of the engines didn't start, triggering an automatic launch abort. Now offloading propellant."
He later added that SpaceX will replace two Raptor engines "for extra confidence," with the next launch attempt likely next week. A final revised date and time is yet to be decided.
The automatic abort system that stopped the launch from happening, is designed to halt space vehicles from taking off instantly if any critical parameter falls outside safe limits.
In the case of SpaceX's Flight 13, it prevented the rocket from lifting off with an incomplete engine ignition sequence.
WHAT IS FLIGHT 13 AND WHAT WILL IT DO?
Flight 13, also known as Integrated Flight Test-13 (IFT-13), was scheduled to build on lessons from previous Starship missions.
The test plan included deploying next-generation Starlink satellite simulators, demonstrating an in-space Raptor engine relight, and carrying out controlled splashdowns of both the Super Heavy booster and the Starship upper stage.
Each of these milestones is aimed at proving technologies that will eventually support routine satellite launches, lunar missions under Nasa's Artemis programme and, ultimately, human missions to Mars.
WHAT IS STARSHIP AND WHY IS IT IMPORATANT?
Standing nearly 400 feet tall, Starship is the largest and the most powerful rocket ever built.
The launch system consists of the Super Heavy booster, powered by 33 Raptor engines, and the Starship upper stage, which uses six Raptor engines for spaceflight.
Unlike conventional rockets, both stages are designed to be fully reusable, something that remains a key part of SpaceX's strategy to significantly reduce the cost of commuting to space.
Although the countdown ended in a last-second scrub, such launch aborts are a routine part of rocket development. They are designed to prioritise safety over schedule and allow engineers to identify potential problems before a vehicle leaves the ground.
After completing 12 test flights, Starship has already demonstrated major milestones, including successful stage separation, controlled atmospheric re-entry and the catch of the returning Super Heavy booster using Starbase's launch tower arms.
SpaceX engineers will now inspect the affected engines, replace the two Raptors identified by Musk and prepare the vehicle for another launch attempt in the coming days.
SpaceX's much-awaited 13th test flight of Starship ended before it even began.
Just as the world's most powerful rocket was about to lift off from Starbase in South Texas during the early hours of Friday, July 17, the countdown reached T-0, and then stopped.
Instead of launching into the sky, the fully stacked Starship and Super Heavy remained firmly on the launch pad after an automatic abort was triggered in the final moments of the countdown.
SpaceX founder Elon Musk soon explained why the company called off the launch and what is to follow.
WHAT WAS STARSHIP LAUNCH CANCELLED?
According to Musk, the launch was automatically aborted because not all the Super Heavy booster's Raptor engines ignited as expected during the startup sequence.
Posting on X shortly after the scrub, Musk wrote: "Some of the engines didn't start, triggering an automatic launch abort. Now offloading propellant."
He later added that SpaceX will replace two Raptor engines "for extra confidence," with the next launch attempt likely next week. A final revised date and time is yet to be decided.
The automatic abort system that stopped the launch from happening, is designed to halt space vehicles from taking off instantly if any critical parameter falls outside safe limits.
In the case of SpaceX's Flight 13, it prevented the rocket from lifting off with an incomplete engine ignition sequence.
WHAT IS FLIGHT 13 AND WHAT WILL IT DO?
Flight 13, also known as Integrated Flight Test-13 (IFT-13), was scheduled to build on lessons from previous Starship missions.
The test plan included deploying next-generation Starlink satellite simulators, demonstrating an in-space Raptor engine relight, and carrying out controlled splashdowns of both the Super Heavy booster and the Starship upper stage.
Each of these milestones is aimed at proving technologies that will eventually support routine satellite launches, lunar missions under Nasa's Artemis programme and, ultimately, human missions to Mars.
WHAT IS STARSHIP AND WHY IS IT IMPORATANT?
Standing nearly 400 feet tall, Starship is the largest and the most powerful rocket ever built.
The launch system consists of the Super Heavy booster, powered by 33 Raptor engines, and the Starship upper stage, which uses six Raptor engines for spaceflight.
Unlike conventional rockets, both stages are designed to be fully reusable, something that remains a key part of SpaceX's strategy to significantly reduce the cost of commuting to space.
Although the countdown ended in a last-second scrub, such launch aborts are a routine part of rocket development. They are designed to prioritise safety over schedule and allow engineers to identify potential problems before a vehicle leaves the ground.
After completing 12 test flights, Starship has already demonstrated major milestones, including successful stage separation, controlled atmospheric re-entry and the catch of the returning Super Heavy booster using Starbase's launch tower arms.
SpaceX engineers will now inspect the affected engines, replace the two Raptors identified by Musk and prepare the vehicle for another launch attempt in the coming days.
