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A knowledge platform for everything above Earth — astronomy, space, the night sky, celestial events, mythology, and astrology as a clearly separate cultural tradition.

Astronomy is presented as scientific, evidence-based, and sourced. Astrology is presented as cultural, symbolic, and interpretive — never as proven science.

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Home
Rockets
Falcon 9 second stage

Rocket stage

Falcon 9 second stage

Rockets

Overview

The expendable Falcon 9 upper stage, powered by a single vacuum-optimized Merlin engine.

Components & hardware

Engines

Propellants

Knowledge connections

Stage ofFalcon 9
Powered byMerlin 1D
Uses propellantRP-1 / LOX

Sources

Facts on this topic will be cited from these primary and reference sources.

SpaceXSpace Exploration Technologies Corp.
Falcon 9, Falcon Heavy, Starship, and the Merlin/Raptor engines — manufacturer specifications and launch data.

Quick facts

Type: Rocket stage
Role: upper
Stage number: 2
Engine: Merlin 1D
Engine count: 1
Propellant: RP-1 / LOX

Unknown specifications are left blank rather than estimated.

Quality & authority

31%

Unreviewed

Completeness: Complete
Source coverage: Partial
Citation coverage: None
Relationship coverage: Complete
Review coverage: None
Image coverage: None

Curated from authoritative public sources. See source quality.