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What happens if a spacesuit is punctured?

The outcome depends on which layer is damaged and how rapidly gas escapes. An abrasion of the outer cover does not necessarily cause depressurization.

Reading time
1 min
Sources
5 cited
Updated
17 Oct 2026

Buzz Aldrin in an A7L suit on the Moon. A historical EVA suit example; individual designs differ.Real photograph · NASA / images.nasa.gov · Public Domain (NASA)

Key facts

Agency
National Aeronautics and Space Administration (NASA)

#explainer

Contents · 7
  1. 01Overview
  2. 02A small leak and a major breach
  3. 03Why gloves are inspected
  4. 04Damage that may be superficial
  5. 05Key points
  6. 06Sources
  7. 07Connections

The outcome depends on which layer is damaged and how rapidly gas escapes. An abrasion of the outer cover does not necessarily cause depressurization. A breach of the gas-tight layer can threaten breathing and requires an emergency response.

A small leak and a major breach

The system may compensate for a limited leak from its supplies for a time. That consumes reserves and is not normal safe operation. With extensive damage, replacement gas may be insufficient. The astronaut follows the procedures for that suit and returns to a pressurized space as quickly as possible.

Why gloves are inspected

Hands frequently contact edges and tools. Checking wear and system readings is therefore part of spacewalk protection. A puncture does not automatically tear the suit apart like a balloon, and a person does not instantly freeze; the immediate dangers are loss of pressure and available oxygen.

Damage that may be superficial

A protective cover can be abraded while the pressure layer remains intact. A photograph of a damaged cover therefore cannot establish leak rate or remaining time. System readings and inspection of the actual damage matter. Multilayer construction separates protective functions so that every surface contact does not immediately release the breathing atmosphere.

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Key points

  1. The system may compensate for a limited leak from its supplies for a time.
  2. Hands frequently contact edges and tools.
  3. A protective cover can be abraded while the pressure layer remains intact.

Sources & further reading

last verified · 17 October 2026

  1. EVA suit construction, pressure garment and life support.
  2. Spacesuit functions and protection during a spacewalk.
  3. Launch and EVA suit differences and the role of pressure.
  4. Technical requirements for spacesuit life support and operation.
  5. Spacewalk risks, protective functions and operational limitations.

Spaceflightpedia. (n.d.). What happens if a spacesuit is punctured?. Retrieved 17 October 2026, from https://spaceflightpedia.com/article/spacesuit-puncture

article text — CC-BY-SA · ◉ NASA photography — public domain · ✦ AI illustration — marked, generated from sources

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