An idea for a space-based boost-phase defence system called Brilliant Pebbles was proposed towards the end of the 1980s.

What is it and what does it mean? - With companies like Elon Musk’s Space X lining up to lend a hand and a four-star Space ...

The anti-missile shield that Donald Trump wants to put in the sky could protect North America from attacks. But it could also ...

The Conversation U.S. asked Iain Boyd, an aerospace engineer and director of the Center for National Security Initiatives at ...