UNIVERSE
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Strong solar winds would blow the astronaut away from the vehicle otherwise.
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Astronauts must remain close to the vehicle to obtain the heat it provides.
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Without a tether, astronauts would float away due to the lack of gravity in space.
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Tethers add just enough weight to the astronaut to keep them in orbit.
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Detailed explanation-1: -Most astronaut suits can provide oxygen for their host for about seven and a half hours. Suppose an astronaut does float off into space due to a malfunction of the tethers and a failure of their jetpacks. In that case, they have little chance of survival and will most likely die due to asphyxiation.
Detailed explanation-2: -Any time an astronaut gets out of a vehicle while in space, it is called a spacewalk. A spacewalk is also called an EVA. EVA stands for extravehicular activity.
Detailed explanation-3: -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-4: -Beyond Low Earth Orbit, space radiation may place astronauts at significant risk for radiation sickness, and increased lifetime risk for cancer, central nervous system effects, and degenerative diseases.