"Houston, we have a problem." Journeying into space is pretty dangerous stuff. Just ask Nick Hague and Alexey Ovchinin. They are the astronaut and the cosmonaut who in 2018 escaped a malfunctioning rocket after launching. Thankfully they got out fine, but as history has shown, not all astronauts have been as lucky.
Click through this gallery to revisit the most tragic accidents in the history of space travel.