UNIVERSE
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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sufficient mass to provide gravity equal to that of Earth.
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powerful engines to escape the pull of Earth’s gravity.
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enough food for the astronauts to eat for several years.
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adequate space in which the astronauts can float freely.
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Detailed explanation-1: -Without a tether, astronauts would float away due to the lack of gravity in space. Tethers add just enough weight to the astronaut to keep them in orbit.
Detailed explanation-2: -The space shuttle was NASA’s space transportation system. It carried astronauts and cargo to and from Earth orbit.
Detailed explanation-3: -The major advantage of the Space Shuttle was that it was reusable. Previous spacecrafts were not able to be reused. This made the Space Shuttle economically advantageous. Additionally, astronauts in the Space Shuttle had more room to move around and could conduct a variety of experiments.
Detailed explanation-4: -The suits provide the proper pressure for the body and supply astronauts with water to drink and oxygen to breathe. The spacesuit worn for spacewalks outside the International Space Station is called the extravehicular mobility unit, or EMU.
Detailed explanation-5: -Why is it necessary for astronauts on the International Space Station to generate and recycle oxygen? There is no oxygen or other gasses in space.
Detailed explanation-6: -Astronauts go on spacewalks for many reasons. Spacewalks let astronauts work outside their spacecraft while still in space. Astronauts can do science experiments on a spacewalk. Experiments can be placed on the outside of a spacecraft.