SpaceX Starship Achieves Historic Soft Splashdown in Fourth Test Flight

SpaceX's Starship spacecraft glows with incandescent plasma during its successful atmospheric reentry, viewed from orbit with Earth's cloud-covered curvatu

October 21, 2025

SpaceX's Starship system completes its fourth test flight, achieving a historic reusable rocketry milestone.

In a landmark achievement for reusable spaceflight technology, SpaceX successfully completed the fourth integrated test flight of its Starship system. Both the Super Heavy booster and the Starship upper stage performed controlled soft splashdowns, marking a pivotal step towards creating a fully reusable launch vehicle capable of deep-space missions.

Primary Mission Objectives and Outcomes

The primary goal of this fourth flight was to demonstrate the ability to return and reuse both the Super Heavy booster and the Starship spacecraft. This involved a successful ascent, stage separation, a controlled boostback burn for the booster, and a survivable, controlled reentry for the Starship vehicle, culminating in soft splashdowns for both components.

Detailed Flight Trajectory and Key Milestones

Lifting off from Starbase in Boca Chica, Texas, the 33 Raptor engines of the Super Heavy booster propelled the stack towards space. Following a clean hot-stage separation, the booster executed a flip maneuver and a boostback burn, guiding it to a precise, soft splashdown in the Gulf of Mexico. The Starship upper stage continued on its suborbital trajectory, successfully surviving the intense heat of atmospheric reentry before executing its own landing burn and achieving a soft splashdown in the Indian Ocean.

  1. Super Heavy Booster Success: Achieved a successful boostback burn and a gentle, controlled landing on the water's surface.
  2. Starship Reentry and Splashdown: The upper stage endured the extreme temperatures of reentry, maneuvering with its flaps before a successful splashdown.
  3. Critical Data Collection: Gathered invaluable data on vehicle performance, heat shield integrity, and flap controllability during hypersonic flight.

Critical Importance for NASA's Artemis Missions

This successful test is a foundational requirement for NASA's Artemis program. A human-rated version of Starship is slated to be the lander that will return astronauts to the lunar surface. Demonstrating controlled landing and vehicle survivability moves SpaceX significantly closer to meeting NASA's stringent safety and reliability requirements for crewed missions.

This flight represents a monumental leap forward in our quest to make life multi-planetary. Achieving soft splashdowns for both stages on the fourth try is a testament to the team's relentless innovation and a critical milestone on the path to full reusability.

- Elon Musk, CEO of SpaceX

Future Development and Next Steps

With this successful demonstration, SpaceX will now analyze the retrieved data to refine vehicle design and operational procedures. Future flights will likely focus on more ambitious objectives, including demonstrating orbital refueling capabilities, deploying Starlink satellites, and eventually, performing a full orbital launch and recovery on the launch pad itself.

The success of Starship's fourth flight not only validates SpaceX's iterative design philosophy but also accelerates the timeline for humanity's return to the Moon and eventual exploration of Mars. It solidifies Starship's position as a transformative system in the new era of space exploration.

Frequently Asked Questions

The primary goal of the Starship program is to develop a fully and rapidly reusable super heavy-lift launch vehicle capable of transporting over 100 metric tons of cargo and crew to low Earth orbit, the Moon, Mars, and beyond, with the aim of making humanity a multi-planetary species.

A soft splashdown demonstrates that the vehicle can survive atmospheric reentry and perform a controlled, powered descent. It is a critical intermediate step that proves the terminal guidance, engine relight, and landing systems work as designed before attempting a more complex and higher-risk "catch" and landing on the launch tower.

This successful test significantly de-risks the Starship Human Landing System (HLS) and builds confidence in the vehicle's design. While many more tests are required, including an uncrewed lunar landing, this milestone keeps SpaceX on a viable path to support the Artemis III mission timeline for landing astronauts on the Moon.

The most challenging phase was the atmospheric reentry of the Starship upper stage. The vehicle must endure temperatures exceeding 1,400°C (2,600°F) while using its four large flaps to maintain control at hypersonic speeds. Successfully navigating this phase and executing a landing burn was the flight's most significant technical hurdle.