Space security encompasses a range of measures aimed at ensuring the peaceful exploration and utilization of outer space, preventing the militarization of space, and promoting international cooperation in space.

The Outer Space Treaty, formally known as the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, is the primary international treaty governing the peaceful use of outer space.

The Space Surveillance Network (SSN) is a global network of sensors and telescopes used to track and monitor objects in Earth's orbit, detect and characterize space debris, and provide early warning of potential collisions between satellites.

As of 2023, the United States has the largest number of active satellites in orbit, followed by China and Russia.

The primary function of GPS satellites is to provide accurate positioning, navigation, and timing information to users on Earth.

Wideband Global SATCOM (WGS) is a satellite constellation used for secure military communications.

The International Space Station (ISS) is a modular space station in low Earth orbit. It is used for conducting scientific research in microgravity, testing new technologies for space exploration, and providing a platform for international cooperation in space.

The Soviet Union was the first country to launch an artificial satellite into orbit, Sputnik 1, on October 4, 1957.

Space junk, orbital debris, and space pollution are all terms used to describe the accumulation of defunct satellites and other debris in Earth's orbit.

The United Nations Office for Outer Space Affairs (UNOOSA) is the international organization responsible for coordinating global efforts in space exploration and utilization.

The Artemis program is a NASA-led international human spaceflight program that aims to land the first woman and the next man on the Moon by 2024, establish a sustainable human presence on the Moon, and prepare for future missions to Mars.

The United States has the largest space budget in the world, followed by China and Russia.

Satellite survivability, satellite resilience, and satellite hardening are all terms used to describe the ability of a satellite to resist interference or attack.

The United States has the most advanced satellite navigation system in the world, known as the Global Positioning System (GPS).

The Space Force is a branch of the U.S. military responsible for protecting U.S. space assets, conducting space operations, and developing new space technologies.