Why does the full moon appear larger than the sun?

Answer 1

Sun is 400 times farther away from Moon and sun is 400 times larger in diameter than moon.

However, from Earth, we both have roughly the same angular diameter because of the elliptical orbit, which causes angular size changes. As a result, the Moon's angular diameter increases slightly during its orbit: the Sun's angular diameter ranges from 31'32" to 32'33.33" while the Moon's ranges from 29'20" to 34".o6". The reason they appear larger during sunsets or rising is simply an optical illusion created by human eyes.

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Answer 2

Ian Aitchison

The full moon does not appear larger than the sun. They have similar angular sizes, but the moon's apparent size can vary due to its elliptical orbit.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.