Audacious modular jet concept uses swappable wings, engines and cabins
The inner wing is common to all variants, however...
An invisible force surrounding Earth may be creating water on the moon
How does water make it to the moon? - This is the billion-dollar question
CubeSat rocket thruster is so small it has to be made like microchips
With satellites weighing under 10 kg (22 lb) making up about 90% of today's satellite launches and some of them not much larger than a smartphone, creating components for them is a major undertaking