We don't know the exact date, but NASA recently experienced another moment "Houston, we have a problem". The scare came during a routine experiment on the International Space Station (ISS), one of the hundreds carried out on the ship to study the effects of low gravity. When scanning the neck of one of the crew members, a clot was found in his jugular. The dangerous consequences of this diagnosis forced medical decisions to be improvised due to the shortage of treatments on board the ship. This thrombus, the first to be detected in an astronaut outside of Earth, shows that there are still unknown health risks in space travel. An important factor to take into account now that interest in manned flights to the Moon, in the near future, and Mars.
