// http://cosmicdiary.org/fmarchis/files/2014/05/50-years-of-exploration.jpg
// http://waitbutwhy.com/2015/08/how-and-why-spacex-will-colonize-mars.html

let moonMissions = 72
let marsMissions = 38

let marsSummary = "There are \(marsMissions) mars missions till today."
let moonSummary = "There are \(moonMissions - marsMissions) more moon missions till today."

print(marsSummary)
print(moonSummary)
