ThedreamofsendinghumanstoMarsiscloserthaneverbefore.Infact,manyscientiststhinkthatthefirstpersontosetfootontheRedPlanetisalivetoday.Butwhereshouldthefirstexplorersvisitwhentheygetthere?Horizonhasgatheredtheworld'
sleadingexpertsonMarsandaskedthem:wherewouldtheygo,iftheygotthechance-andwhatwouldtheyneedtosurviv...