The US Defense Advanced Research Projects Agency (Darpa) has recently commissioned three private companies, Blue Origin, Lockheed Martin and General Atomics, to develop nuclear fission thermal rockets for use in lunar orbit. Such a development, if flown, could usher in a new era of spaceflight. That said, it...
Lockheed Martin's faced a technical challenge when they developed their hybrid airships (which are as big as a football field); how could they check their ships surfaces did not have tiny pinholes in them. Your browser does not support the video tag. Lockheed Martin believes the solution is...