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1. https://www.livescience.com/63608-bfr-moon-passenger-revealed-spacex.html 2. https://phys.org/news/2018-09-moon-space-tourism.html 3. https://www.cleveland.com/travel/index.ssf/2018/09/is_space_the_tourists_new_play.html 4. https://www.ucf.edu/pegasus/space-tourism/ 5. https://www.space.com/28051-why-space-tourism-will-succeed.html 6. http://www.spaceflightinsider.com/spoken-content/will-space-tourism-ever-happen/ 7. https://www.theguardian.com/theobserver/2012/jun/17/space-tourism-science-virgin-robin-mckie 8. http://www.bbc.com/future/story/20140408-six-reasons-space-tourism-matters 9. https://www.britannica.com/science/space-exploration/Human-beings-in-space-debate-and- consequence 10. http://www.cnn.com/fyi/interactive/specials/space/stories/space.tourist.html 11. http://theconversation.com/space-tourism-economics-financing-and-regulating-trips-to-the-final- frontier-100428 12. https://theconversation.com/space-tourism-could-help-boost-science-and-health-research-heres- how-79812 13. http://www.spacefuture.com/archive/the_economic_benefits_of_space_tourism.shtml
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