logo
SpaceX Took a Big Step Toward Reusing Starship's Super Heavy Booster

SpaceX Took a Big Step Toward Reusing Starship's Super Heavy Booster

WIRED04-04-2025

SpaceX is having trouble with Starship's upper stage after back-to-back failures, but engineers are making remarkable progress with the rocket's enormous booster.
The most visible sign of SpaceX making headway with Starship's first stage—called Super Heavy—came at 9:40 am local time (10:40 am EDT; 14:40 UTC) Thursday at the company's Starbase launch site in South Texas. With an unmistakable blast of orange exhaust, SpaceX fired up a Super Heavy booster that has already ne to the edge of space. The burn lasted approximately eight seconds.
This was the first time SpaceX has test-fired a "flight-proven" Super Heavy booster, and it paves the way for this particular rocket—designated Booster 14—to fly again soon. SpaceX confirmed a reflight of Booster 14, which previously launched and returned to Earth in January, will happen on next Starship launch With Thursday's static fire test, Booster 14 appears to be closer to flight readiness than any of the boosters in SpaceX's factory, which is a short distance from the launch site.
SpaceX said 29 of the booster's 33 methane-fueled Raptor engines are flight-proven. "The first Super Heavy reuse will be a step towards our goal of zero-touch reflight," SpaceX wrote on X.
A successful reflight of the Super Heavy booster would be an important milestone for the Starship program, while engineers struggle with problems on the rocket's upper stage, known simply as the ship. What a Difference
Super Heavy's engines are capable of producing nearly 17 million pounds of thrust, twice the power of NASA's Saturn V rocket that sent astronauts toward the Moon. Super Heavy is perhaps the most complex rocket booster ever built. It's certainly the largest. To get a sense of how big this booster is, imagine the fuselage of a Boeing 747 jumbo jet standing on end.
This story originally appeared on Ars Technica, a trusted source for technology news, tech policy analysis, reviews, and more. Ars is owned by WIRED's parent company, Condé Nast.
SpaceX has now launched eight full-scale test flights of Starship, with a Super Heavy booster and Starship's upper stage stacked together to form a rocket that towers 404 feet (123.1 meters) tall. The booster portion of the rocket has performed well so far, with seven consecutive successful launches since a failure on Starship's debut flight.
Most recently, SpaceX has recovered three Super Heavy boosters in four attempts. SpaceX has a wealth of experience with recovering and reusing Falcon 9 boosters. The total number of Falcon rocket landings is now 426.
SpaceX reused a Falcon 9 booster for the first time in March 2017. This was an operational flight with a communications satellite on a mission valued at several hundred million dollars.
Ahead of the milestone Falcon 9 reflight eight years ago, SpaceX spent nearly a year refurbishing and retesting the rocket after it returned from its first mission. The rocket racked up more mileage on the ground than it did in flight, first returning to its Florida launch base on a SpaceX drone ship and then moving by truck to SpaceX's headquarters in Hawthorne, California, for thorough inspections and refurbishment.
Once engineers finished that work, they transported the booster to SpaceX's test site in McGregor, Texas, for test-firings, then finally returned the rocket to Florida for final launch preparations.
There will be no such journey for the Super Heavy booster. First of all, it's a lot more difficult to transport than the shorter, skinnier Falcon 9. Super Heavy's design also features improvements informed by lessons learned in the Falcon 9 program. This helped SpaceX get the Super Heavy on the cusp of a reflight in less than three months.
You can watch a replay of Thursday's static fire test in this video from NASASpaceflight.com.
With Starship and the Super Heavy booster, SpaceX should get more points for difficulty. Super Heavy is larger and has more engines than the Falcon 9, so theoretically, there are more things that could go wrong. And instead of touching down with landing legs at a separate location, SpaceX uses mechanical arms to catch Starship's booster as it returns to the launch pad.
This approach should allow engineers to rapidly reuse Super Heavy boosters. Eventually, SpaceX will do the same with Starships returning from orbit. Still Investigating
At the same time that engineers are taking steps forward with the Super Heavy booster, the other big piece of Starship is holding up SpaceX's launch cadence in Texas. The upper stage, or ship, failed at roughly the same point in flight on SpaceX's two most recent test flights in January and in March.
These test flights were the first use of an upgraded, larger ship known as Block 2 or Version 2. On both flights, Starship lost power from its engines and tumbled out of control roughly eight minutes after liftoff, breaking apart and dropping fiery debris near the Bahamas and the Turks and Caicos Islands.
The failures prevented SpaceX from testing Starship's upgraded heat shield, one of the most significant upgrades introduced with Block 2. The plan for both flights was to send Starship on a trajectory through space halfway around the world, then perform a guided reentry over the Indian Ocean, targeting a pinpoint splashdown northwest of Australia. A successful reentry and splashdown at sea could give SpaceX officials confidence to attempt a full orbital flight of Starship, culminating in a catch at the launch site in Texas.
Instead, SpaceX repeated the same launch profile from the January mission on the following flight in March. The company will likely do the same on Flight 9, the next Starship launch.
SpaceX has closed out the investigation into the accident that cut short the January test flight, according to the Federal Aviation Administration. The FAA announced Monday that it accepted the results of SpaceX's investigation, which determined the "probable root cause for the loss of the Starship vehicle was stronger than anticipated vibrations during flight [that] led to increased stress on, and failure of, the hardware in the propulsion system."
Ultimately, the vibrations led to a fire in the engine compartment before the engines shut down and the vehicle lost control.
The FAA said SpaceX identified and implemented 11 corrective actions to prevent the same failure from happening again. Officials haven't announced a probable root cause for the launch failure in March. The FAA said SpaceX's investigation remains open. But the circumstances and timing of the failure suggest it could share a similar underlying cause.
Whatever the case may be, Starship's back-to-back failures to start the year are a setback. Elon Musk, SpaceX's founder and CEO, wanted the company to launch as many as 25 Starship flights in 2025. At this point, achieving half that number might be a stretch.
This means critical tests of the ship's reentry and return to the launch site, in-orbit refueling capability, and the first Starship missions to deploy larger versions of SpaceX's Starlink Internet satellites are on hold. Earlier this year, Musk suggested the Starship refueling demonstration would slip into 2026, which isn't good news for NASA.
The US space agency has multibillion-dollar contracts with SpaceX to develop a version of Starship to land astronauts on the Moon's south pole as part of the Artemis lunar program. For those missions, SpaceX must launch around 10 (the exact number remains unclear) Starship refueling flights to low-Earth orbit to top off the propellant tanks for the ship before it heads to the Moon.
This will require not just a thorough demonstration of SpaceX's refueling architecture but also recovery and reuse of boosters and ships to maintain a launch rate fast enough to complete all of the refueling flights over a period of a few weeks to a few months.
SpaceX hasn't released a schedule for the next Starship flight, but it's probably at least a month away. The ship assigned to the next test flight is still in its factory at Starbase. Its next move will be to roll out to a test stand for its own engine firing, then SpaceX will likely move it back to the factory for inspections and finishing touches. Then, SpaceX will roll the ship to the launch pad, where crews will raise it on top of the Super Heavy booster in the final days before liftoff.
This story originally appeared on Ars Technica.

Orange background

Try Our AI Features

Explore what Daily8 AI can do for you:

Comments

No comments yet...

Related Articles

Foldables are going to miss out on this major Android 16 multitasking feature
Foldables are going to miss out on this major Android 16 multitasking feature

Android Authority

time2 hours ago

  • Android Authority

Foldables are going to miss out on this major Android 16 multitasking feature

TL;DR Foldables like the Pixel 9 Pro Fold won't support on-device windowing in Android 16. Only tablets will have the option of floating app windows, while phones with Desktop Mode will need an external display. Desktop Mode support is optional for OEMs building phones and foldables. If you were still hoping that Android 16 might finally let you run apps in floating windows on your foldable, you might want to temper those expectations. Despite the larger screens on foldables like the Pixel 9 Pro Fold, Android 16 won't support on-device windowing for them. That clarification comes from a Google response to Ars Technica, confirming that phones and foldables won't be able to multitask with freeform app windows on their screens. Instead, they'll only be able to use Android's new desktop-style interface when connected to an external display like a monitor or TV. The only devices getting windowing on their built-in screens for now are tablets. Mishaal Rahman / Android Authority Even the external-display windowing feature won't be guaranteed across the board on larger handsets. Google says it'll be up to individual manufacturers whether or not their phones support Desktop Mode at all. So while Pixel devices will support windowing on external screens, others might stick to basic display mirroring with no added functionality. The rest of Android 16 still strongly advocates for better large-screen support. Apps targeting the update will mostly be resizable by default on bigger displays, which should help make better use of space on tablets and foldables alike. It's becoming mandatory, but developers can temporarily opt out until Android 17, and games are currently exempt. Whatever the consumer demand for on-device windowing, it seems like only a matter of time before it happens. This is just a small reality check for anyone who might have been expecting foldables to become mini desktops overnight. Got a tip? Talk to us! Email our staff at Email our staff at news@ . You can stay anonymous or get credit for the info, it's your choice.

Odds of asteroid 2024 YR4 hitting the Moon go up again
Odds of asteroid 2024 YR4 hitting the Moon go up again

Yahoo

time3 hours ago

  • Yahoo

Odds of asteroid 2024 YR4 hitting the Moon go up again

An asteroid that, until a few months ago, was believed to be a threat to Earth is increasingly looking like it could crash into the Moon in 2032. Asteroid 2024 YR4 was discovered on Dec. 27 by the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Río Hurtado, Chile. Since its discovery, the asteroid has warranted international attention, jumping to the highest asteroid threat on the Torino Impact Hazard Scale. Chances Asteroid 2024 Yr4 Will Hit Moon Increase But Earth Remains In The Clear In February, new ground-based observations dropped those chances of an Earth impact enough that asteroid 2024 YR4 is no longer considered a threat to Earth. The international astronomy community continues to closely watch asteroid 2024 YR4, which is no longer visible through ground-based telescopes until 2028. In May, a team led by Andy Rivkin, with Johns Hopkins Applied Physics Laboratory in Maryland, used the James Webb Space Telescope's (JWST) Near-Infrared Camera to hone in on 2024 YR4. JWST data, along with expert analysis from Nasa's Center for Near-Earth Object Studies, have refined the asteroid's orbit, increasing the chances of a crash with the Moon on Dec. 22, 2032, from 3.8% to 4.3%. In February, the odds of a Moon impact were about 1.7%. However, NASA said if the asteroid does collide with the Moon, it will not alter its orbit. The Moon is covered in crater impacts from other space collisions. Previous observations by JWST helped determine 2024 YR4 is about 200 feet wide, or about the height of a 15-story building, Rivkin wrote in an April blog post for NASA. Asteroid 2024 YR4 has dipped behind the Sun and beyond Webb's view for article source: Odds of asteroid 2024 YR4 hitting the Moon go up again

SpaceX readies private launch of four astronauts to International Space Station
SpaceX readies private launch of four astronauts to International Space Station

Yahoo

time3 hours ago

  • Yahoo

SpaceX readies private launch of four astronauts to International Space Station

Four crew members are set to launch Wednesday on a privately funded mission to the International Space Station. The flight, organized by the Houston-based company Axiom Space, is slated to lift off at 8 a.m. ET from NASA's Kennedy Space Center in Florida. The foursome will journey into orbit in a SpaceX Crew Dragon capsule atop a Falcon 9 rocket. NASA will broadcast live coverage of the launch beginning at 7:05 a.m. ET on NASA+. The flight was scheduled to launch Tuesday but high winds along the Florida coast forced a one-day delay. The mission, known as Ax-4, is expected to last about two weeks at the International Space Station. The mission will be led by retired NASA astronaut Peggy Whitson, who has already logged a record 675 days in space — more than any other American astronaut. Joining her will be pilot Shubhanshu Shukla, an astronaut with the Indian Space Research Organization; mission specialist Sławosz Uznański-Wiśniewski, a Polish scientist with the European Space Agency; and mission specialist Tibor Kapu, a mechanical engineer from Hungary. Shukla, Uznański-Wiśniewski and Kapu will make history by becoming the first people from their countries to live and work on the International Space Station. During their two-week stay at the orbiting lab, the Ax-4 crew members will conduct a host of scientific experiments, according to NASA, including studies of muscle regeneration, how sprouts and edible microalgae grow in microgravity and how tiny aquatic organisms survive at the ISS. If the launch goes according to plan, the four astronauts will dock at the space station on Thursday at around 12:30 p.m. ET. The upcoming flight will be Axiom Space's fourth crewed mission to the International Space Station. The company's first private expedition to the ISS was in 2022 with an all-civilian crew. The price tag for the Ax-4 mission has not been publicly disclosed, but space tourists reportedly paid around $55 million per seat on previous Axiom Space expeditions. This article was originally published on

DOWNLOAD THE APP

Get Started Now: Download the App

Ready to dive into the world of global news and events? Download our app today from your preferred app store and start exploring.
app-storeplay-store