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A fundamental step in overcoming this challenge is trying to understand the effects of long-term space travel on the human body. In October 2015, the NASA Office of Inspector General issued a health hazards report related to space exploration, including a human mission to Mars. [9] [10]
Due to the potential negative effects of astronaut exposure to cosmic rays, solar activity may play a role in future space travel. Because galactic cosmic ray fluxes within the Solar System are lower during periods of strong solar activity, interplanetary travel during solar maximum should minimize the average dose to astronauts.
Illnesses and injuries during space missions are a range of medical conditions and injuries that may occur during space flights. Some of these medical conditions occur due to the changes withstood by the human body during space flight itself , while others are injuries that could have occurred on Earth's surface.
Space is known to accelerate aging and many human diseases, and the research underscores this by identifying key health risks that can be targeted for countermeasures," Beheshti added.
Space can be an unfriendly place for the human body, with microgravity conditions and other factors tampering with our physiology, from head to toe - head, of course, being a primary concern.
Before sending humans, space agencies used animals to study the effects of space travel on the body. [10] After several years of failed animal recoveries, an Aerobee rocket launch in September 1951 was the first safe return of a monkey and a group of mice from near space altitudes. [11]
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Three of the flights had flown above the Kármán line (edge of space), and one was intended to do so. In each of these accidents, the entire crew was killed. As of December 2023, a total of 676 people have flown into space and 19 of them have died. This sets the current statistical fatality rate at 2.8 percent.