UNIVERSE
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A supply of oxygen for the astronauts.
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The ability to create its own gravity.
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Bright lights to see where it’s going.
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A device for growing food for humans.
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Detailed explanation-1: -Spacecrafts must provide their passengers with oxygen to breathe. Spacecrafts carry their own sources of oxygen and nitrogen. These gases are circulated throughout the spacecraft to provide similar air to the one we breathe on Earth. Astronauts must also carry their entire food supply when they travel to space.
Detailed explanation-2: -Information about the items that astronauts take with them is usually kept very private, but typical PPK items include family photos, organizational flags, t-shirts, ball-caps, books, religious texts, and personal mementos.
Detailed explanation-3: -Above the 63, 000-foot threshold, humans must wear spacesuits that supply oxygen for breathing and that maintain a pressure around the body to keep body fluids in the liquid state. At this altitude the total air pressure is no longer sufficient to keep body fluids from boiling.
Detailed explanation-4: -Spacewalking astronauts face radiation, dust, debris, and extreme temperatures. Temperatures on spacewalks may vary from as cold as minus 250 degrees Fahrenheit to as hot as 250 degrees in the sunlight. The suits provide the proper pressure for the body and supply astronauts with water to drink and oxygen to breathe.
Detailed explanation-5: -The oxygen and nitrogen are mixed into the capsule for the astronauts to breathe.