Engineers were analyzing the data, working to understand the full scope of the problem
En las primeras horas del 7 de mayo, a dos horas del despegue programado, Boeing y la NASA detuvieron el lanzamiento de la nave Starliner desde Cabo Cañaveral al detectar un comportamiento anómalo en la válvula de presión del oxígeno líquido en la etapa superior del cohete Atlas V. Los astronautas Butch Wilmore y Suni Williams, ya a bordo, tuvieron que esperar una vez más. Este nuevo aplazamiento se inscribe en una historia más larga de promesas postergadas: la de convertir a Boeing en el segundo proveedor comercial de transporte tripulado para la NASA, en un momento en que la agencia busca no depender de un solo camino hacia la Estación Espacial Internacional.
- A solo dos horas del despegue, con los astronautas ya en sus asientos, los ingenieros detectaron que la válvula reguladora de presión del oxígeno líquido en la etapa Centaur se comportaba de forma inesperada, obligando a detener la cuenta atrás.
- El aplazamiento no es un hecho aislado: el programa Starliner arrastra años de contratiempos, desde fallos en los paracaídas hasta problemas con el aislamiento térmico, y la misión tripulada lleva retrasada desde julio de 2023.
- Boeing emitió un comunicado escueto confirmando que sus ingenieros analizan los datos, pero sin ofrecer una nueva fecha de lanzamiento ni precisar el alcance real del problema.
- El éxito de esta misión no es solo un hito para Boeing: certificaría a la compañía como segunda opción de transporte tripulado para la NASA, reduciendo la dependencia exclusiva de SpaceX y sus cápsulas Crew Dragon.
- Mientras la comunidad espacial observa y los astronautas aguardan, nadie puede decir cuándo volverá a abrirse la ventana de lanzamiento.
En la madrugada del 7 de mayo, con la cuenta atrás en marcha y los astronautas Butch Wilmore y Suni Williams ya instalados en la nave, Boeing y la NASA tomaron la decisión de abortar el lanzamiento. La Starliner, sobre un cohete Atlas V de United Launch Alliance en Cabo Cañaveral, no despegaría esa mañana. Los ingenieros habían detectado un comportamiento anómalo en la válvula de regulación de presión del tanque de oxígeno líquido en la etapa superior Centaur. La naturaleza exacta del problema y el tiempo necesario para resolverlo permanecían sin respuesta.
Era el momento en que Boeing debía demostrar que podía hacer lo que SpaceX ya había logrado: llevar astronautas con seguridad a la Estación Espacial Internacional. La nave había sido construida, probada y autorizada para volar. Pero en las horas previas al amanecer, la ventana se cerró de nuevo. Boeing confirmó que sus equipos analizaban los datos sin anunciar una nueva fecha.
El retraso no sorprendió a quienes seguían el accidentado recorrido del programa. Tras dos intentos fallidos en 2019 y 2021, la primera misión no tripulada exitosa llegó en mayo de 2022. La misión tripulada, originalmente prevista para julio de 2023, se fue aplazando por fallos en los paracaídas y problemas con el aislamiento térmico. Cada demora erosionaba la credibilidad del programa.
Lo que estaba en juego era considerable. La NASA había apostado por socios comerciales para el transporte de tripulaciones tras retirar el transbordador espacial, y necesitaba una segunda opción junto a SpaceX. Si Starliner completaba esta misión —si Wilmore y Williams pasaban una semana en órbita y regresaban sanos—, la nave quedaría certificada para llevar hasta cuatro astronautas en misiones operativas. Esa capacidad transformaría el acceso estadounidense al espacio.
Pero antes había que resolver el problema de la válvula. Los ingenieros comenzaron a trabajar sin que nadie pudiera decir cuándo llegaría el próximo intento.
Two hours before dawn on May 7th, with two astronauts strapped into their seats and the countdown clock ticking toward liftoff, Boeing and NASA made the call to stop. The Starliner spacecraft, perched atop a United Launch Alliance Atlas V rocket at Cape Canaveral Space Force Station in Florida, would not fly that morning. Engineers monitoring the rocket's upper stage—the Centaur—had spotted something wrong: the pressure regulation valve controlling the liquid oxygen tank was behaving in ways it shouldn't. No one knew yet what the problem was or how long it would take to fix it.
This was supposed to be the moment Boeing finally proved it could do what SpaceX had already done—carry astronauts safely to the International Space Station. NASA astronauts Butch Wilmore and Suni Williams had trained for this mission. The spacecraft had been built, tested, and cleared for flight. The launch window had opened. And then, in the predawn hours, it closed again. Boeing issued a terse statement: engineers were analyzing the data, working to understand the full scope of the problem and figure out what needed to change. No new launch date was announced.
This delay was not a surprise to anyone who had been following Starliner's long and troubled path to this moment. The spacecraft first flew in May 2022, but only as an uncrewed test—and that came after two failed attempts in 2019 and 2021. The crewed mission had originally been scheduled for July 2023. That date slipped when engineers discovered critical flaws in the parachute system and in fiberglass insulation tape. Months passed. New dates were set and reset. Each delay chipped away at the program's momentum and raised questions about whether Boeing could actually deliver on its promises.
What made this mission so consequential was what success would mean for NASA. The space agency had bet heavily on commercial partners to handle crew transport after retiring the Space Shuttle. SpaceX had already proven the model worked with its Crew Dragon capsule, which had been ferrying astronauts to and from the station for years. But NASA wanted a second option—a backup, a competitor, a way to ensure that if one company faced problems, the other could keep missions flying. Starliner was supposed to be that second option. If this launch succeeded, if the spacecraft docked cleanly at the station, if Wilmore and Williams spent a week in orbit and returned safely to the southwestern United States under parachute, then NASA could finally certify Starliner for operational missions. The spacecraft was designed to carry four astronauts, or some mix of crew and cargo, to low Earth orbit. That capability, once certified, would reshape how America accessed space.
But first, the valve had to be fixed. Engineers would spend the coming days and weeks pulling apart the problem, running tests, determining whether the issue was isolated to this particular rocket or something systemic that could affect future launches. The astronauts waited. NASA waited. The space community watched. No one could say when the next attempt would come.
Citações Notáveis
Engineers are analyzing the data to understand the problem and determine corrective actions— Boeing statement
A Conversa do Hearth Outra perspectiva sobre a história
Why does a single valve in the rocket's upper stage matter enough to cancel a launch two hours before it happens?
Because at that point, you can't take any chances. The Centaur stage is what gets the spacecraft to the right altitude and velocity for the journey to the station. If that valve fails during flight, you lose pressure control in the oxygen tank. That's a catastrophic failure mode.
But they must have tested this valve hundreds of times before.
They did. Which is why finding anomalous behavior this late is so unsettling. It means either something changed that they didn't anticipate, or there's a gap in their testing they didn't know existed.
How long does it usually take to figure out and fix something like this?
Days, weeks, sometimes longer. They have to understand not just what went wrong with this particular valve, but whether the problem exists on other rockets too. That's what makes it so costly in terms of schedule.
The astronauts were already in the capsule, right?
Yes. Wilmore and Williams were suited up and in their seats. That's the hardest part—you're so close, and then you have to stand down. It's not dangerous to do so, but it's psychologically brutal.
Is this typical for Boeing, or is Starliner uniquely unlucky?
Starliner has had more than its share of setbacks—parachute failures, insulation problems, now this. But every new spacecraft program hits snags. The difference is how you respond and whether you can eventually prove the system is safe. That's what Boeing is trying to do.
What happens if they can't fix it quickly?
Then the mission slips further, and the pressure on Boeing intensifies. NASA needs a second crew provider. SpaceX is working fine. But if Boeing can't deliver, NASA's options narrow. That's the real weight of this moment.