GENERAL KNOWLEDGE

GK

THE UNIVERSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The sun is much larger than the moon. However, as viewed from Earth, the sun and moon appear to be the same size. Why do the sun and moon appear to be the same size when viewed from Earth?
A
The moon is much hotter than the sun.
B
The moon is much denser than the sun.
C
The moon is much brighter than the sun.
D
The moon is much closer to Earth than the sun.
Explanation: 

Detailed explanation-1: -Why do the sun and moon look exactly the same size from the Earth? The sun is 400 times bigger than the moon but, due to their relative distance from Earth, appear exactly the same size in the sky.

Detailed explanation-2: -The Moon and Sun have virtually the same angular size in our sky because the Sun is about 400 times wider than the Moon, but it’s also about 400 times farther away. This allows us to see spectacular coronal displays and prominences during total solar eclipses.

Detailed explanation-3: -"When the moon is near the horizon, the ground and horizon make the moon appear relatively close. Because the moon is changing its apparent position in depth while the light stimulus remains constant, the brain’s size-distance mechanism changes its perceived size and makes the moon appear very large.

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