Space-industry watchers expressed concern this week that the emerging space tourism sector is not being candid enough about the safety risks for travellers.

They voiced some of those concerns during a conference of the International Association for the Advancement of Space Safety, which held three days of meetings in Montreal.

Tommaso Sgobba, an aeronautical engineer and the agency’s outgoing president, called suborbital flight safety “a serious matter that should be pursued with openness and transparency.”