It's taking place in Germany - and brings together bright young minds, with organizations like the European Space Agency and the World Food Program - to look at how new ideas can solve big problems.

That is the "Flock E1" Dove. A geomapping satellite launched from the International Space Station last year - designed in Chris Boshuizen's garage. The founder of Planet Labs has come to the right summit.

There's never been a gathering quite like this in Europe. But there's now a boom in space entrepreneurs - many, it seems, following Boshuizen's path. The "Sea Serpant", for example - a low-cost, re-usable, water-launching rocket.

And the tiny T-Minus Dart  

The final frontier is getting a lot closer fast -- and Earthling investors realise it. That's why they pumped more money into space start-ups in 2015 than in the previous 15 years combined! But on the other hand, there are still significant barriers to making mass space travel a reality

Because not everyone can do it quite like this. Richard Branson's Virgin Galactic hopes to start commercial flights to space within a few years. Though a ticket on SpaceShip Unity might come at at least several thousand dollars. The bright young minds here are focused on a different market: smaller-scale perhaps. But potentially - no less ground-breaking.