The US has confirmed it deployed a space weapon in Earth's orbit, the first time it has acknowledged such offensive capabilities.

Axar.az reports, citing BBC, that US Secretary of the Air Force Troy Meink said the "on orbit" weapon was necessary to safeguard US forces against hostile enemy action.

Speaking at the Air, Space and Cyber Conference on Monday, Meink said the US was ready for "evolving threats", but did not elaborate on the weapon's capabilities or when it was put into orbit.

Senior military leaders have previously said they planned to boost military capabilities in space, citing Russian and Chinese programmes developing ways to attack and disrupt US satellites in a future conflict.

The Trump administration has said that space-based capabilities - and interceptor missiles - are a crucial part of its planned "Golden Dome" defence system to protect the US from missiles and other airborne threats.