More states are preparing for war in outer space. The result could be accelerated, intensified conflict; environmental destruction; and nuclear winter. Even if we avoid the ultimate catastrophe, the consequences of war in space are serious. The destruction of space systems would harm every human on Earth. We must start working to protect civilians on Earth from such a fate.
The history of arms control in outer space reads like a success story. Outer space is one of the few domains of human activity in which the focus has been on prevention. Although military satellites that provide communications, remote sensing, navigation, and timing services once dominated space and continue to provide essential military services, their operations have long been considered peaceful. Those of us working in space security say that space is “militarized but not weaponized.”