The Congressional Budget Office has estimated that deploying and operating just the space-based interceptors could cost up to $542 billion over the next two decades.

Earlier this week, Donald Trump unveiled his new line of defence for the US – a $175 billion ‘Golden Dome’. Despite looking like something out of a Simpsons episode, Trump said the Golden Dome will have ground and space-based capabilities that are able to detect and stop missiles at all four major stages of a potential attack.

An idea for a space-based boost-phase defence system called Brilliant Pebbles was proposed towards the end of the 1980s. Rather than having large satellites with multiple missiles, it entailed having around 1,000 small individual missiles in orbit. It would have also used about 60 orbiting sensors called Brilliant Eyes to detect launches.

Palantir Technologies Inc.'s AI-powered role in U.S. defense with SpaceX & Anduril redefines missile tracking. Click for my PLTR post-earnings update.

Some experts are worried about the cost and timeline of U.S. President Donald Trump's proposed Golden Dome missile defence system, which Canada has expressed interest in joining. They also say it could set off a space-based arms race that would escalate global tensions.

Secretary Pete Hegseth denied China's assertion that Golden Dome was an effort to turn space into a 'war zone,' arguing it was only for defense of the homeland.

General Stephen Whiting tells Chicago forum that Beijing has spent three decades preparing to target US infrastructure.

If you were worried about the possibility of World War III, fear not: Donald Trump has announced plans to develop a "golden dome" missile defence system to keep the U.S. safe — and Stephen Colbert has thoughts.