Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
external spacecraft
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "external spacecraft" is correct and usable in written English.
It can be used to refer to spacecraft that operate outside of a particular environment, such as outside of Earth's atmosphere or outside of a specific space station. Example: "The mission will involve launching external spacecraft to explore the outer planets of our solar system."
✓ Grammatically correct
Science
News & Media
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
4 human-written examples
To make sure that no outside influence imparts a stray wobble to the spinning balls, the telescope floats freely inside an external spacecraft equipped with jets to sense and counter any drag from stray wisps of atmosphere.
News & Media
Polyimides are used as the outer layer of thermal control insulation blankets covering most of the external spacecraft surfaces that are exposed to space environment.
Science
Polyimides are used as the outer layer of thermal control insulation blankets, covering most of the external spacecraft surfaces that are exposed to the space environment.
Science
Considerable effort has been devoted to design the system compatible with the Cubesat standard, being mounted outside on the external spacecraft structure, without requiring modifications on the standard prescriptions.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
In addition, the unknown external disturbances and spacecraft inertia are also taken into consideration.
This results in a nonlinear H∞ control law that is capable of robustly stabilizing the maneuver in the presence of external disturbance and spacecraft inertia uncertainty.
Science
Formation flying opens new perspectives for coronal physics, and allow to conceive giant, externally occulted coronagraphs using a two-component space system with the external occulter on one spacecraft and the optical instrument on the other spacecraft.
Science
Formation flying opens new perspectives in solar physics, and allow to conceive giant, externally occulted coronagraphs using a two-component space system with the external occulter on one spacecraft and the optical instrument on the other spacecraft at a distance of 100 m.
Science
The configuration of the external structure of the spacecraft is fixed.
In this paper, we consider the attitude stabilization problem for a rigid spacecraft with external disturbances.
The project aims at analyzing the propagation of shocks due to hypervelocity impacts from the external shell of a spacecraft to its internal components.
Expert writing Tips
Best practice
When describing a spacecraft's physical characteristics or attachments, use "external spacecraft" to clearly indicate components mounted on the exterior.
Common error
Avoid using "extra spacecraft" when "external spacecraft" is intended. "Extra" implies surplus or additional, while "external" specifies location on the outside of the main structure.
Source & Trust
84%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "external spacecraft" primarily functions as a noun phrase, often serving as a subject or object within a sentence. As Ludwig confirms, it's a valid English phrase, used to describe spacecraft components or entire spacecraft located on the exterior of a larger structure.
Frequent in
Science
70%
News & Media
20%
Wiki
10%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "external spacecraft" is a grammatically sound noun phrase used to describe spacecraft or components situated on the exterior of a larger structure. While recognized by Ludwig as correct, its usage is relatively rare, primarily appearing in scientific and technical contexts and, to a lesser extent, in news media. When employing this phrase, ensure clarity in distinguishing between external and internal elements, avoiding confusion with similar terms like "extra". Alternatives such as "outbound spacecraft" or "remote spacecraft" can provide alternative nuances depending on the desired emphasis.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
outbound spacecraft
Focuses on the direction of travel, indicating a spacecraft leaving a specific point.
remote spacecraft
Emphasizes the distance between the spacecraft and a central location or another spacecraft.
detached spacecraft
Highlights the physical separation of the spacecraft from a larger structure.
orbiting spacecraft
Specifies the spacecraft's path around a celestial body.
companion spacecraft
Implies a collaborative relationship between multiple spacecraft.
exploration probe
Specifically defines the spacecraft's primary purpose: exploration.
interplanetary probe
Describes a spacecraft designed to travel between planets.
deep-space probe
Describes spacecraft operating far from Earth.
satellite
Generic reference to a spacecraft orbiting Earth or another celestial body.
space vehicle
A broad term for any vehicle designed for space travel.
FAQs
What does "external spacecraft" mean?
The term "external spacecraft" refers to a spacecraft or component of a spacecraft that is located on the exterior, rather than the interior. It often denotes instruments or equipment mounted outside the main body.
How to use "external spacecraft" in a sentence?
You might say, "Polyimides are used as insulation on the "external spacecraft" surfaces exposed to space."
What are some alternatives to "external spacecraft"?
Depending on the context, you could use alternatives such as "outbound spacecraft", "remote spacecraft", or "detached spacecraft".
When is it appropriate to use "external spacecraft" instead of "internal components"?
"External spacecraft" is used when discussing features or equipment affixed to the exterior. "Internal components" describes elements located inside the spacecraft's structure.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
3.8/5
Expert rating
Real-world application tested