Hydrogen powered hypersonic flight is moving from speculative concept to detailed engineering plan, with aerospace startups ...

There has been a "flattening of the earth" by new radar and missile technology, a Royal Air Force official said. The long-running assumption that ultralow flying would prevent detection is "obsolete," ...

In the Ukrainian warzone, flying just dozens of feet above the ground is the new standard—fly high, and you're a missile target; fly low, and you risk a catastrophic collision with trees, powerlines, ...