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The sum of human experience has resulted in the accumulation of 58 solar years in space and a much better understanding of how the human body adapts. In the future, industrialisation of space and exploration of inner and outer planets will require humans to endure longer and longer periods in space.
dependence of risk on dose-rates in space related to the biology of DNA repair, cell regulation and tissue responses; predicting solar particle events (SPEs) extrapolation from experimental data to humans and between human populations; individual radiation sensitivity factors (genetic, epigenetic, dietary or "healthy worker" effects)
Adequate energy (caloric) intake is a necessary requirement for humans living and working in space, and much attention has been focused on this requirement. Less effort has been spent on understanding how the caloric heat generated by energy expenditure is handled by humans whose physiologic responses to heat may be altered in the unique ...
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.
With the waning of the Space Race, concluded by cooperation in human spaceflight, focus shifted in the 1970s further to space exploration and telerobotics, having a range of achievements and technological advances. [72] Space exploration meant by then also an engagement by governments in the search for extraterrestrial life.
Research to date into human psychological and sociological effects based on on-orbit near-Earth experiences may have limited generalizability to a long-distance, multi-year space expedition, such as a mission to a near-Earth asteroid (which currently is being considered by NASA) or to Mars. In the case of Mars, new stressors will be introduced ...
In the piece, the physicist writes, "I believe in the possibility of commercial space travel – for exploration and for the preservation of humanity." See Stephen Hawking through the years:
Replica of the Vostok space capsule, which carried the first human into orbit, at Technik Museum Speyer Mercury space capsule, which carried the first Americans into orbit, on display at the Astronaut Hall of Fame, Titusville, Florida North American X-15, hypersonic rocket-powered aircraft, which reached the edge of space Neil Armstrong, one of the first two people to land on the Moon and the ...