Guest
asked 2 years ago
5 Answers - Sort by: Date | Rating
They want to be alive when they again make contact with Terra Firma!
Without sufficient percentage of oxygen being available in the breathing atmosphere that they would be operating in, 21.8 ppm is normal at the surface of earth, their brain would close down to 'entrap' oxygen in the brain's arteries, otherwise they go unconscious, followed by a crash landing on return to the earth's surface!
Without sufficient percentage of oxygen being available in the breathing atmosphere that they would be operating in, 21.8 ppm is normal at the surface of earth, their brain would close down to 'entrap' oxygen in the brain's arteries, otherwise they go unconscious, followed by a crash landing on return to the earth's surface!
0
0
At high altitude there is less oxygen so they wear oxygen masks while flying at very high altitude.
0
0
Guest
answered 2 months ago
- What Was The Name Of The Mission That Neil Armstrong Went On?
- Who Is Neil Watchmaker?
- Who Took Their First Steps On The Moon 19 Minutes After Neil Armstrong?
- How Do Space Shuttles Return To Earth?
- Why Does Food Float In Space?
- How Old Is Apollo?
- Did Alan Shepard Take His First Step On The Moon 19 Minutes After Neil Armstrong?
- What Was The First Space Station?
- How Do Astronauts Survive Without Plants In Space?
- What Are The Advantages And Disadvantages Of A Space Station To Society?
- How Have Spaceships Changed Over 35 Years?
- What Is The Time Difference Between Pittsburgh, Pa And British Columbia Canada?
- What Happen To The Information Space Probes Gather?
- Is It True That The Moon Has An Influence On Our Organism?
- How Many Tourists Does British Columbia Have Every Year?
- How Do Astronauts Survive In Space Ex Food Hygine?
- At What Speed Does A Shuttle Move?
- What The Advantages Of Space Torusim?
- What Kind Of Training Does A Astronaut Do?
- What Are The Advantages And Disadvantages Of Crewed Space Exploration And Space Probes?
- What Is The Advantages And Disadvantages Of Crewed Space Exploration?
- How Many Miles Is It From Knoxville TN To Columbia SC?
- In Xplane9 For Pc How Do You Put Fuel In Space Shuttle Orbiter?
- What Did The US Do To Get Land In Columbia?
- What Is Research According To Neil Armstrong?
Featured Question
Alternative Questions
Contributors have said that this question
has the same meaning as:
- Why Must Pilots Wear Oxygen Masks When They Fly At Very High Attitudes ?
- Why Do Pilots Wear Oxygen Masks At Very High Altitudes ?
New Comment - Comments are editable for 5 min.