Mysterious Ice Deposits Suggest the Moon Shifted on Its AxisFor nearly two decades, scientists have known of two regions onthe moon - one about 6 degrees...Shekhtman, Lonnie
因此,我们在地球上看到的始终是月亮的同一面,背对地球的那一面只能用航天器才能看到。 People on Earth could only see one face of the Moonbecause it rotates around on its own axis in exactly the same time it takes to orbit the Earth.The far side of the Moon can only be seen from spacecra...
But because the moon spins on its axis at exactly the same rate as it orbits Earth, one side remains permanently out of view. literal字面意义的;常见搭配literal meaning/sense/interpretationillumination 光亮,照亮月球被地球潮汐锁定,月球公转一周的时间恰好与月球自转一周的时间相等,因而我们在地球上的人,...
How long does it take for the moon to rotate on its axis? The Moon: The Moon is about 27 percent the size of Earth and has a diameter of over 2,100 miles. This natural satellite orbits around the Earth and has different phases, or ways that it reflects the Sun's light from its ...
B Earth rotates(旋转) on its axis(轴) as it moves around the Sun, completing one full rota-tion every 24 hours. Earth's axis is an imaginary line that passes through the North Pole and South Pole. As a result of Earth's rotation, regions alter-nately(交替地) face the Sun and fac...
3. E “A 200 pound man weighs only 33 pounds on the Moon. When he walks, he can leap along easily."可知, 这里说的是有关引力的情况,故选E。 4. B “The Moon goes around the Earth, and rotates on its axis as it revolves. It takes about 28 days to revolve, and it takes the ...
Another similarity between the sun and moon is that both bodies rotate, and both take a long time to complete a rotation by Earth standards, where one rotation takes about 24 hours, giving us the length of our day. The moon spins once on its axis every 29.5 Earth days. Parts of the ...
I'm the Moon. My appearance is gray and white.我是月球。我看起来是灰白色的。You only see one half of my surface. Whether it's day or night.你只能看到我的一面。无论是白天还是晚上。When the Earth spins on its axis, ocean levels stay the same. Then the moons gravitational pull creates...
A new model of the moon's rotational dynamics - the first that takes into account the moon's solid inner core - helps explain why it appears to wobble on its axis. The answer lies in the complex geometry of the moon's orbit, locked in what is known as a Cassini state ...
The Moon’s Orbit It may help to know a little about the moon’s orbit to understand what is happening during each of the moon phases. It takes the moon the same amount of time to orbit theEarthas it does to complete a full rotation on its axis (i.e. approximately 27 Earth days)....