The United States is looking to build a spy base in the UK to probe deep space and spot any attempt by states such as Russia or China to attack vital satellites orbiting the Earth.
Using radar technology that can identify an object the size of a football up to 22,000 miles (36,000 kilometres) away, the facility would also be able to scan for less sinister, but just as damaging, pieces of space debris that can also break satellites if they collide.
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