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Adapted from Militarisation of space, licensed under CC BY-SA 4.0. Modified for audio. This HearLore entry is also licensed under CC BY-SA 4.0.

— Ch. 1 · Cold War Space Race Origins —

Militarisation of space.

~4 min read · Ch. 1 of 6
In 1957, the Soviet Union launched Sputnik 1, marking humanity's first artificial satellite and igniting a fierce competition between Washington and Moscow. The United States and the USSR poured vast portions of their gross domestic product into developing military technologies that could reach across continents in minutes rather than hours. Reconnaissance satellites began appearing by the late 1960s, allowing militaries to photograph rival installations with increasing accuracy. This orbital surveillance alarmed both sides of the Iron Curtain, prompting them to develop anti-satellite weapons designed to blind or destroy each other's eyes in space. Directed-energy weapons, kamikaze-style satellites, and orbital nuclear explosives were all researched during this period with varying degrees of success. Spy satellites became essential tools for monitoring arms control treaties signed between the two superpowers, a practice often referred to as national technical means of verification.

Nuclear Testing And EMP Effects

Operation Hardtack I included three high-altitude nuclear tests conducted by the United States Government in 1958. YUCCA detonated on April 28 at an altitude of 86,000 feet with a yield of 1.7 kilotons, while ORANGE and TEAK followed later that summer at heights exceeding 140,000 feet. Starfish Prime, tested over Johnston Atoll in 1962, remains the highest altitude nuclear demonstration ever performed. The 1.4 megaton bomb exploded at 400 kilometers within the ionosphere, creating an electromagnetic pulse felt as far away as Hawaii, 1,400 kilometers distant. Streetlights failed across the Hawaiian islands when the pulse hit, proving that such explosions could disable electronics without causing physical damage or radioactive fallout. Soviet Union executed similar high-altitude tests, including Nuclear Test 184 in 1962, which damaged a thousand-kilometer power line in Kazakhstan. These High-Altitude Electromagnetic Pulses created banana-shaped areas of effect due to interaction with Earth's magnetic field, capable of covering entire continents if detonated above thirty kilometers.

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Common questions

When did the Soviet Union launch Sputnik 1 and what was its impact on military competition?

The Soviet Union launched Sputnik 1 in 1957, marking humanity's first artificial satellite. This event ignited a fierce competition between Washington and Moscow to develop military technologies capable of reaching across continents within minutes.

What were the details of Operation Hardtack I nuclear tests conducted by the United States Government in 1958?

Operation Hardtack I included three high-altitude nuclear tests conducted by the United States Government in 1958. YUCCA detonated on April 28 at an altitude of 86,000 feet with a yield of 1.7 kilotons, while ORANGE and TEAK followed later that summer at heights exceeding 140,000 feet.

How does the Global Positioning System support military operations today?

The Global Positioning System uses an intermediate circular orbit constellation of at least twenty-four satellites to determine precise location anywhere on Earth. Primary military purposes include improved command and control through enhanced location awareness and accurate targeting of smart bombs or cruise missiles.

Which nations have successfully destroyed live satellites using kinetic means since the mid-1980s?

A USAF pilot flying an F-15 successfully shot down P78-1, a communications satellite in low Earth orbit, in the mid-1980s. The People's Republic of China used a missile system to destroy one of its obsolete satellites in 2007, India eliminated a live satellite in March 2019, and Russian military forces destroyed Kosmos 1408 on the 15th of November 2021.

When did the Outer Space Treaty enter into effect and what restrictions does it impose?

The Outer Space Treaty entered into effect on the 10th of October 1967 after being signed by the United States, United Kingdom, and Soviet Union. It banned placement of nuclear weapons or other weapons of mass destruction in orbit or on celestial bodies while declaring outer space free for exploration by all states.

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Ballistic Missile Defense Systems

Early American efforts included the Nike-Zeus Program, Project Defender, the Sentinel Program, and the Safeguard Program deployed in the mid-1970s. The Stanley R. Mickelsen Safeguard Complex near Nekoma, North Dakota protected the Grand Forks ICBM facility but operated for less than a year before closure. Interceptor missiles required nuclear warheads to destroy incoming intercontinental ballistic missiles, limiting their effectiveness under the Anti-Ballistic Missile Treaty of 1972. In 1983, President Ronald Reagan proposed the Strategic Defense Initiative, a space-based system ridiculed by some as unrealistic and expensive. Astronomer Carl Sagan argued that the Soviet Union could simply build more missiles to overcome the defense through sheer numbers. Proponents claimed this strategy would force Communist leaders to shift large portions of their gross domestic product to counter the initiative or watch their stockpiles become obsolete. United States Space Command formed in 1985 to institutionalize outer space use by U.S. Armed Forces, later merging with USSTRATCOM on the 26th of June 2002.

Modern Military Satellite Applications

The Global Positioning System uses an intermediate circular orbit constellation of at least twenty-four satellites to determine precise location anywhere on Earth. The first Block II satellite launched on the 14th of February 1989, while the fifty-second GPS satellite deployed on the 6th of November 2004 aboard a Delta II rocket. Maintaining the system costs approximately four hundred million dollars annually, including replacement of aging spacecraft. Primary military purposes include improved command and control through enhanced location awareness and accurate targeting of smart bombs or cruise missiles. Satellites also carry nuclear detonation detectors forming part of the United States Nuclear Detonation Detection System. Russia operates GLONASS with twenty-four satellites in three orbital planes, while China provides regional navigation via its Beidou system. Network-centric warfare relies heavily on high-speed communications allowing soldiers to view battlefields in real time through separate internet grids created for military use alone.

Anti-Satellite Weaponry Incidents

In the mid-1980s, a USAF pilot flying an F-15 successfully shot down P78-1, a communications satellite in low Earth orbit. People's Republic of China used a missile system to destroy one of its obsolete satellites in 2007. The United States destroyed its malfunctioning satellite USA 193 in 2008 using similar kinetic means. India eliminated a live satellite in March 2019, joining the ranks of nations capable of such operations. On the 15th of November 2021, Russian military forces destroyed Kosmos 1408, an old Soviet satellite, using a ground-based missile. These incidents represent training missions rather than actions against actual opposing forces, yet they generated significant debris fields threatening future space activities. No human casualties have resulted from conflict in space, nor has any ground target been successfully neutralized directly from orbit despite these capabilities existing today.

International Legal Frameworks

The Outer Space Treaty entered into effect on the 10th of October 1967 after being signed by the United States, United Kingdom, and Soviet Union. It banned placement of nuclear weapons or other weapons of mass destruction in orbit or on celestial bodies while declaring outer space free for exploration by all states. As of the 1st of January 2005, ninety-eight states had ratified the treaty with twenty-seven additional signatures. The Moon Treaty bans any military use of celestial bodies including weapon testing though no space-capable state has ratified it. Limited Test Ban Treaty signed in 1963 ended further high-altitude nuclear tests effectively banning High-Altitude Electromagnetic Pulse development. Prevention of an Arms Race in Outer Space committee meets at Palais des Nations in Geneva since 1985 to discuss these issues. UN General Assembly passed resolutions calling on major space powers to prevent arms races in 2014 with one hundred seventy-eight countries voting in favor.