======The Revised Outer Space Treaty======
The replacement for the old Outer Space Treaty of 1967. The new treaty's key clauses and later protocols include:

//Environmental Protection:// The treaty prohibits certain industrial processes in Earth-Lunar (and Martian) space, including self-replicating von Neumann machines and large-scale antimatter production.

//Homesteading:// The treaty contains vague language granting property rights to nations or corporate entities engaged in economic development of particular areas, known as 'zones of common courtesy.'

//Orbital Engineering:// Altering the orbit of asteroids, comets, or moons is regulated, especially into Earth-Lunar and Martian space, and flight plans must be filed with international agencies.

//Space Propulsion:// The treaty prohibits Orion drives (which use external nuclear explosions for propulsion) and regulates the use of fission or antimatter drives within Earth's atmosphere or LEO.

//Terraforming:// The treaty bans new terraforming operations without international consensus.

//Weapons in Space:// Deployment of 'defensive' weapon systems in space is permitted, but weapons of mass destruction are prohibited.

Although the Revised Outer Space Treaty is broadly accepted as a good compromise, it remains just that; strengthening, altering, weakening, or abolishing it is a major objective of many rival interests. Black holes have fallen through a loophole in the OST, and negotiations on a protocol are in progress.