GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What wave is best used to determine if galaxies are moving towards or away from us?TEK 8.8C
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sound
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visible light
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gamma ray
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radio waves
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Explanation:
Detailed explanation-1: -Scientists use Doppler shift to determine whether distant stars and galaxies are moving towards us or away from us.
Detailed explanation-2: -Radio waves are virtually the only easy and safe way to communicate with a spacecraft, making antennas and propagation two core elements in spacecraft engineering.
Detailed explanation-3: -In other words, EM waves are composed of oscillating magnetic and electric fields. Description: Electromagnetic waves are formed when an electric field comes in contact with a magnetic field. They are hence known as ‘electromagnetic’ waves.
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