Gemini spacecraft
The Gemini spacecraft was a two-person American capsule used for NASA’s crewed space missions in the 1960s.
Also known as: Project Gemini spacecraft, Gemini capsule
How big is it?
5.61 m long
Overall spacecraft length · specified
A little perspective
About the same scale as Racing catamaran.
Racing catamaran: A racing catamaran is a high-speed sailing boat with two parallel hulls, designed for competitive sailing.
Measurements, assumptions & sources +
Gemini spacecraft
A Gemini spacecraft was 5.61 m long and 3.05 m across its equipment adapter. The 3,810 kg launch mass is representative of the crewed missions; exact mass varied by mission.
The marked overall spacecraft length is calibrated. Unmeasured illustration details are representative.
Racing catamaran
A Formula 18 racing catamaran at the class limits of 5.52 m length, 2.60 m width and 180 kg minimum ready-to-sail mass, shown at a defined 12 m/s pace. Crew mass and momentary race speed are excluded.
International Formula 18 — Class rules
The marked formula 18 maximum length is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 5.61 m
For comparison, this page uses overall spacecraft length. The record labels this value specified, so the stated convention rather than an inferred average controls the comparison.
A Gemini spacecraft was 5.61 m long and 3.05 m across its equipment adapter. The 3,810 kg launch mass is representative of the crewed missions; exact mass varied by mission.
The marked vertical span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Gemini spacecraft dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 5.61 m | Not recorded | specified | |
| 3.05 m | Not recorded | specified | |
| 3.81 t | 3.76 t to 3.85 t | specified |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · SpaceKepler space telescope4.7 mThe Kepler space telescope was a NASA observatory launched to detect planets around other stars by monitoring changes in their brightness.
Around the same scale · TransportRacing catamaran5.52 mA racing catamaran is a high-speed sailing boat with two parallel hulls, designed for competitive sailing.
Nearest higher value · SpaceCassini spacecraft6.8 mThe Cassini spacecraft was a NASA probe launched to study Saturn and its moons, carrying scientific instruments and the Huygens lander.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- NASA — Gemini spacecraftGemini programme spacecraft dimensions, configuration and mission context.
There’s always another scale
Follow your curiosity.
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