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With 19 Tons in Orbit at 220 km from Earth, 14.5 Meters Long, and a 23 mm Auto Cannon That Was Fired in Space, Salyut-3 from the Soviet Almaz Program Created the Only Armed Military Space Station in History

Written by Valdemar Medeiros
Published on 31/01/2026 at 14:32
Com 19 toneladas em órbita a 220 km da Terra, 14,5 metros de comprimento e um canhão automático de 23 mm que chegou a ser disparado no espaço, Salyut-3, do programa soviético Almaz criou a única estação espacial militar armada da história
Com 19 toneladas em órbita a 220 km da Terra, 14,5 metros de comprimento e um canhão automático de 23 mm que chegou a ser disparado no espaço, Salyut-3, do programa soviético Almaz criou a única estação espacial militar armada da história
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With 19 Tons, Orbiting at 220 km from Earth and a 23 mm Cannon Actually Fired in Space, the Soviet Program Almaz Created the Only Armed Military Space Station in History.

During the height of the Cold War, when the United States and the Soviet Union were competing not only on Earth but also in space, Moscow took orbital militarization to a level that would never be repeated. In absolute secrecy, the USSR developed the Almaz program, a series of crewed space stations with exclusively military purposes, designed for strategic espionage and, for the first time, armed for combat in orbit.

The Almaz was not a theoretical concept or a futuristic delusion: it existed, was launched, received human crews, and even tested a real weapon in space, something no other power has done since.

The Military Logic Behind Almaz

In the 1960s and 1970s, automatic satellites still had significant limitations. The Soviet Union believed that human crews in orbit could identify targets more accurately, react in real time, and make strategic decisions impossible for the automatic systems of the time.

Thus, Almaz was born, a project conceived from the start as a military orbital surveillance platform, capable of observing enemy installations, missile bases, and strategic movements directly from space.

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To disguise its military nature, the stations were launched under the civilian designation Salyut, confusing Western analysts for years.

Dimensions and Characteristics of the Station

The Almaz stations were about 14.5 meters long, with an approximate mass of 19 tons, and operated in low orbits, between 220 and 270 kilometers in altitude. This choice was not casual: lower orbits allowed for higher resolution images, essential for espionage.

Aboard, the cosmonauts operated advanced optical systems for the time, capable of photographing strategic targets with a level of detail superior to that of the automatic satellites then available.

The Weapon That Took War to Space

The most controversial and historic element of the Almaz program was its orbital weapon. The Salyut 3 (OPS-2) station was equipped with a 23 mm automatic cannon, adapted from systems used in Soviet military aircraft.

The purpose of the armament was clear: to defend the station against potential attacks from enemy satellites, orbital interceptors, or even attempts at space sabotage, a real fear during the tensest years of the space race.

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What is most impressive is that the cannon was not just on paper. After the crew left, the weapon was remotely tested, firing about 20 projectiles in the vacuum of space before the station’s deorbit. It is the only confirmed case of a crewed weapon tested in orbit in human history.

Firing a weapon in space is not trivial. Without an atmosphere, each shot generates an equal and opposite reaction, potentially altering the station’s orbit.

To compensate for this, Almaz needed to integrate its attitude control systems with the armament, ensuring stability after the shots.

This detail illustrates the level of sophistication and risk involved in the project.

Real Missions, Limited Results

Despite the technological advancement, the program faced issues. The missions were short, complex, and expensive. Maintaining crews in orbit solely for espionage proved less efficient than the rapid advancement of automatic satellites, which began to offer better resolution, longer operational time, and lower costs.

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Additionally, the political risk of an armed incident in space, involving human crews, was enormous. An orbital confrontation could quickly escalate into a global conflict.

After three launched stations, the Almaz program was terminated. The Soviet Union chose to concentrate efforts on automatic satellites and scientific space stations, such as Mir.

Orbital armament, while technically feasible, was deemed strategically unnecessary and politically dangerous.

A Precedent That Was Never Repeated

Since Almaz, no nation has placed conventional crewed weapons on space stations again. International treaties, such as the Outer Space Treaty, and the very evolution of technology have made this path unattractive.

Still, Almaz remains an extreme milestone of the militarization of space, demonstrating how far the logic of the Cold War was able to go.

Today, when talking about space warfare, the focus is on satellites, electronic interference, and anti-satellite weapons. Almaz serves as a reminder that, at another historical moment, space was dangerously close to becoming a new battlefield with humans on board.

It never fired at a real enemy, but its existence proves that the final frontier has indeed been considered as full military territory.

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Marcos Reis
Marcos Reis
02/02/2026 08:23

História muito interessante, mas dai acreditar que nenhuma nação tenha colocado armas em órbita?Duvido muito. A diferença é que ao invés de canhões, nada me faz acreditar que não haja uma infinidade de mísseis atômicos apontados para terra, esperando um dedo nervoso apertar um botão e extinguir um continente inteiro. E se um dia uma coisa dessa for descoberta e denunciada, com certeza, por alguns instantes, vão apontar os tais mísseis para o espaço e dizer que se trata de armas contra inimigos externos, como foi “demonstrado” no filme Armargedon , sem Bruce Willis, é claro

aristoteles onassis
aristoteles onassis
01/02/2026 10:07

Na proxima guerra mundial que tiver a russia perde a siberia para os chineses e stanilingrado tem os dias contados

aristoteles onassis
aristoteles onassis
01/02/2026 10:05

Alem de ter uma forca armada de soldados despreparados

Valdemar Medeiros

Formado em Jornalismo e Marketing, é autor de mais de 20 mil artigos que já alcançaram milhões de leitores no Brasil e no exterior. Já escreveu para marcas e veículos como 99, Natura, O Boticário, CPG – Click Petróleo e Gás, Agência Raccon e outros. Especialista em Indústria Automotiva, Tecnologia, Carreiras (empregabilidade e cursos), Economia e outros temas. Contato e sugestões de pauta: valdemarmedeiros4@gmail.com. Não aceitamos currículos!

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