Space tourism in the nearly two decades since Dennis Tito journeyed to the International Space Station, eight private citizens have paid the $20 million fee to travel to space. Space Adventures suggests that this number could increase fifteen-fold by 2020. These figures do not include other private space agencies such as Virgin Galactic, which as of 2014 has sold approximately 700 tickets priced at $200,000 or $250,000 dollars each and has accepted more than $80 million in deposits. Space tourism Space tourism is space travel for recreational, leisure or business purposes. There are several different types of space tourism, including orbital, suborbital
Space tourism subtropics, whereas the temperature at the poles would increase by between . The ozone layer would also be affected, with the tropics losing up to 1.7% of ozone cover, and the polar regions gaining 5–6%. The researchers stressed that these results should not be taken as "a precise forecast of the climate response to a specific launch rate of a specific rocket type", but as a demonstration of the sensitivity of the atmosphere to the large-scale disruption that commercial space tourism could bring. Several organizations have been formed to promote the space tourism industry, including the Space Tourism Society, Space