Feasibility Study and Future Projections of Suborbital Space Tourism at the Example of Virgin GalacticE-bookFeasibility Study and Future Projections of Suborbital Space Tourism at the Example of Virgin GalacticdiMatthias OttoValutazione: 0 su 5 stelle0 valutazioniSalva Feasibility Study and Future Projections of Suborbital Space Tourism at the Example of Virgin Galactic per dopo