
First-stage burnout is complete. The spent booster frame is releasing from the ascending payload as pyrotechnic bolts fire and cold-gas thrusters push the stages apart at the mission's critical separation altitude.
At Main Engine Cutoff, the first-stage booster releases from the payload section. Separation thrusters fire as the booster tumbles into a controlled descent while the upper stage stabilizes and continues its climb toward orbit.
Real-time metrics captured during first-stage separation, streamed directly from Rocket Story mission control.
Separation Velocity
Booster Altitude
Payload Altitude
Separation Distance
Second-stage ignition nominal
At the moment of separation, both stages share an identical velocity vector. Pyrotechnic bolts release and cold-gas thrusters push the spent booster away from the ascending second stage, seeding a small but critical difference in trajectory.
With main engine cutoff, the booster is now a ballistic body. Gravity curves its path downward while atmospheric drag bleeds velocity, sending it on a decaying arc back toward a recovery zone roughly 86 km downrange.
Meanwhile, the payload stack ignites its second-stage engine. Freed from the mass of the spent booster, its thrust-to-weight ratio climbs sharply, steepening the ascent vector and widening the gap between the two flight paths every second.
As altitude passes 200 km, the flight path angle flattens toward horizontal. A precisely timed circularization burn matches horizontal velocity to the target orbit, converting a climbing arc into a stable, closed trajectory around Earth.
Hover any marker on the diagram to inspect the physics driving each phase of the vector shift.
MISSION MILESTONE
The first stage has done its job, falling away into the dark as the payload presses onward. Every vector, every burn, every second of telemetry brought us to this moment—now the mission turns its eyes toward orbit.

Rocket Story climbs through the troposphere, engines burning steady as cloud formations streak past the fuselage at over Mach 1.
Tracking Rocket Story’s ascent curve through the cloud deck in real time. Altitude checkpoints, wind shear vectors, and atmospheric pressure ripples update continuously as you scroll through the climb.
Real-time readouts streaming from onboard sensors as Artemis-IX climbs through the upper troposphere. Values update continuously as the mission scroll progresses.
Tracking Mission ARTEMIS-IX as it climbs through the troposphere, stratosphere, and mesosphere on its way to the edge of space.
Dense air, weather systems, and cloud formations. Structural loads peak here as the vehicle fights maximum aerodynamic pressure (Max-Q).
Thin, stable air and the ozone layer. Engines throttle for efficiency as atmospheric drag falls away and the sky darkens toward black.
The coldest layer of Earth’s atmosphere, where meteors burn to dust. The vehicle nears the curvature of the planet and the edge of the sky.
Threading the cumulus deck — 0% traversed
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