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The moon itself is round, and when the sun shines on it, it is reflected to the earth, and of course it is also round. Here's the explanation: If the Moon is right between the Earth and the Sun, then the sun's rays will shine on the side of the Moon facing away from us.
Therefore, we cannot see anything from the moon. When the Moon moves from west to east at 12 times the speed of the Sun, the next night it will appear a little to the east of the Sun, so that we can see a thin crescent moon at the illuminated western edge of the moon, which appears in the form of a "crescent moon". As the moon continues to turn eastward, the part we can see gets bigger and bigger, and the crescent moon gradually becomes fatter.
When the moon turns 1 4 miles in the sky, its west side is illuminated compared to the sun, and we see a bright half moon. Then, it continues to change until the moon turns to the opposite side of the sky to the sun, at which point the sun's rays pass through the sides of the earth, illuminating the entire side of the moon facing us, so that what we see is a "full moon".
Trouble, thanks!
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It's the moon that's smart, and people are more sleek in society, not to mention in the vast universe, and it's also a job to roll, and this shape is good for everybody!!
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The moon is always round, but what we can see is often missing....
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Because the moon is rounded by me.
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Remember a scene under the moon? Imitate it.
Answer: The round moon emits a soft moonlight. A few thin gray clouds lingered in the soft moonlight, and the river, which had been running for a day, subsided.
The moon is reflected on the surface of the river, and when the evening breeze blows, it sparkles like a piece of white jade, like a ribbon adorned with precious stones. With a kind and gentle smile on my mother's round face, she quietly watched me play in the moonlight. <>
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Xu Ruzi admires the moon.
Original text] Xu Ruzi was nine years old, tasted the moon play, and said: "If there is nothing in the moon, it should be extremely evil?" Xu said: "No." For example, if a person has a pupil in his eye, without it, he will not know. ”
When Xu Ruzi was nine years old, he used to play in the moonlight, and someone said to him: "If there is nothing in the moon, it will be very bright, right?" Xu Ruzi said: "It's not like this, it's like a human eye has a pupil, without it, the eye is not bright." ”
The subtlety: the human eye is compared to the moon, and the questioner is asked with the help of something.
It is rare that a nine-year-old naughty boy can be so full of questions.
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In the process of planet formation, there is a contraction or the release of light things. Stars, on the other hand, release energy, and the sun prevents it from being carried into space through gravity, and the slenderness ridge is like the earth retains the atmosphere, so the stars and planets are round.
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The moon itself is round, and on the fifteenth day of the lunar calendar, the earth is in the middle of the sun and the moon, and the three become almost a straight line. That night, we were facing the moon with our backs to the sun at the same time, and the surface of the moon that we saw happened to be all illuminated by the sun.
The sixteenth circle of the moon on fifteen is an astronomical phenomenon. The reason is that the standard of the lunar calendar is that the new year must fall on the first day of the new year.
On the 15th day of the lunar calendar, the first quarter is before the 15th month, and the second quarter is after the 15th.
The moon revolves around the earth in an elliptical orbit, and it generally takes 29 and a half days to "walk" from a full moon to the next full moon, which is called a "synodic moon", and when "looking", the moon, the earth, and the sun are closest to a straight line, and the moon is also the roundest and brightest. The "pace" of the moon rotation is fast and slow, and the time of the moon's "looking" is different every month, and the probability is "the moon of fifteen and sixteen rounds". >>>More
At night, when we walk on the road, under the bright moonlight, we will see that the moon seems to follow us, we stop, the moon does not move, it seems that the moon is following people. >>>More
Let me tell you about an example of centripetal force that Newton imagined at the time. At the time, he thought that a person throws a stone horizontally, and the stone will fall to the ground due to the gravitational pull of the earth; If the force of the stone is greater, that is, the initial velocity of the stone is greater, and it will fall farther away; Suppose that if the force is large enough and the initial velocity is large enough that everyone knows that the earth is round, then the stone will keep falling "down" around the earth and will not fall to the ground. >>>More