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NASA scientists have presented an animation showing what the moon will look like in 2021. There are two viewing options: from the northern and southern hemisphere of the Earth.
NASA researchers unveiled an animation of how the view of the moon will change over the course of 2021. The agency has released two animations in 4K: one for the northern and southern hemisphere. Each of them lasts five minutes.
They explained that thanks to the lunar libration, we can see just over 50% of the satellite. During the year, researchers can observe up to 59% of our satellite’s surface. The moon has a slight wobble from north to south and a slight wobble from east to west, and these movements change how much of the moon we can see at any given time.
Scientists will also be able to observe the slow oscillation of the Earth’s satellite. This phenomenon allows us to see the lunar disk in slightly different positions at different times. All four oscillations can be seen in the video: in longitude, in latitude, daily liberation and physical libration.
To do this, you need to pay attention to how the moon increases in size and decreases. This is because the orbit of the Moon has apogee and perigee; this indicates that the object is further away or closer to the Earth. In this case, the rotation speed of the moon remains the same, but its orbital speed changes. Its orbit is faster at the perigee and slightly slower at the apogee.
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