Friday , August 12 2022

The moon slowly pulls from Earth. Will this ultimately be destroyed?



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If the Moon is gradually moving away from us, will it eventually be completely lost and when will it likely happen? originally appeared on Kuora: a place to acquire and share knowledge, empower people to learn from others and better understand the world.

The answer by Robert Frost, Aerospace Engineer, at Kuora:

The moon is retreating from Earth, but it will not continue forever. We need to consider why the Moon is about 3.78 cm a year – it takes the force to provoke it.

The moon causes tidal forces on Earth, causing a projection. But, because the Earth rotates, this projection is not directly between the Earth and the Moon. It's a bit ahead. This protuberance has gravitational attraction of the Moon, causing it to move forward, a little faster.

The causation of the Moon to move a little faster results in a slight climb to a higher orbit. The Moon rises about 3.78 cm per year. But since we just said that the force is gravitational and we know that gravity falls apart, we know that the force will also decrease with distance.

This means that the rate at which the moon will retire will be reduced in time. But there's more to it than that. Force works on both bodies. While the effect on the Moon causes it to recede, the impact on the Earth is that it is caused to slow down its rotation. The day is getting longer.

Finally, the length of the day will correspond to the orbital period of the Moon. This means that both bodies will be tightly locked – which means that the same part of the Earth will always be confronted with the same part of the Moon. And if this happens, there is no longer a leading protuberance, and therefore there is no longer a force that causes the Moon to move away.

This would happen when the Moon's orbital period is about 47 days. It would put the Moon at a distance of about 550,000 km; less than half as much today. In other words, not far away.

However, it takes a long time for this to happen. In the meantime, the Sun will turn into a red giant and its outer layers will stretch to Mars, today, meaning Earth, Moon and every In-N-Out restaurant will be swallowed and converted into free atoms.

This question originally appeared on Kuora – a place to acquire and share knowledge, empower people to learn from others and better understand the world. You can follow Chora Твиттер, Facebook, and Google +. More questions:

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If the Moon is gradually moving away from us, will it eventually be completely lost and when will it likely happen? originally appeared on Chora: a place to acquire and share knowledge, empower people to learn from others and better understand the world.

Answer by Robert Frost, Aerospace engineer, at Chora:

The moon is retreating from Earth, but it will not continue forever. We need to consider why the Moon is about 3.78 cm a year – it takes the force to provoke it.

The moon causes tidal forces on Earth, causing a projection. But, because the Earth rotates, this projection is not directly between the Earth and the Moon. It's a bit ahead. This protuberance has gravitational attraction of the Moon, causing it to move forward, a little faster.

The causation of the Moon to move a little faster results in a slight climb to a higher orbit. The Moon rises about 3.78 cm per year. But since we just said that the force is gravitational and we know that gravity falls apart, we know that the force will also decrease with distance.

This means that the rate at which the moon will retire will be reduced in time. But there's more to it than that. Force works on both bodies. While the effect on the Moon causes it to recede, the impact on the Earth is that it is caused to slow down its rotation. The day is getting longer.

Finally, the length of the day will correspond to the orbital period of the Moon. This means that both bodies will be tightly locked – which means that the same part of the Earth will always be confronted with the same part of the Moon. And if this happens, there is no longer a leading protuberance, and therefore there is no longer a force that causes the Moon to move away.

This would happen when the Moon's orbital period is about 47 days. It would put the Moon at a distance of about 550,000 km; less than half as much today. In other words, not far away.

However, it takes a long time for this to happen. In the meantime, the Sun will turn into a red giant and its outer layers will stretch to Mars, today, meaning Earth, Moon and every In-N-Out restaurant will be swallowed and converted into free atoms.

This question originally appeared on Kuori – a place to acquire and share knowledge, empower people to learn from others and better understand the world. You can follow Chora Твиттер, Facebook and Google +. More questions:

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