UNIVERSE
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the Mars Exploration Rover
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the Hubble Space Telescope
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the Space Shuttle Discovery
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the International Space Station
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Detailed explanation-1: -Astronauts merely feel weightless in International space station because there is no external contact force pushing or pulling upon their body. They are in a state of free fall. The normal force does not comes into play giving the feeling of being weightless.
Detailed explanation-2: -High energy, short wavelength colors such as blue and red are the most efficient sources of light for plants. Blue light promotes leaf growth and red light combined with blue light promotes flowering. Take a look at the VEGGIE plant growth system aboard the International Space Station. What color light do you see?
Detailed explanation-3: -Biology, physiology, fluid physics and combustion, material sciences, fundamental physics and astrobiology are all studied in space, observing how gravity affects basic phenomena on Earth and expanding our knowledge of the world around us.