If the moon was closer to Earth, it would have a number of significant effects on our planet

If the moon was closer to Earth, it would have a number of significant effects on our planet. These effects would include:

* **Higher tides.** The moon's gravity pulls on Earth's oceans, causing them to bulge out on the sides closest to and farthest from the moon. If the moon were closer, the tidal bulge would be larger, resulting in higher tides. This could cause flooding in coastal areas, especially during spring tides.
* **More earthquakes and volcanic eruptions.** The moon's gravity also affects Earth's tectonic plates, which are the giant slabs of rock that make up the planet's surface. If the moon were closer, the gravitational pull would be stronger, which could trigger more earthquakes and volcanic eruptions.
* **A shorter day.** The moon's gravity also slows down Earth's rotation. If the moon were closer, the rotational slowdown would be more pronounced, resulting in a shorter day. This would mean that the sun would rise and set more quickly.
* **More solar eclipses.** The moon's orbit around Earth is not perfectly circular. This means that the moon sometimes passes directly between the sun and Earth, casting a shadow on our planet. If the moon were closer, these solar eclipses would be more frequent.

The exact effects of a closer moon would depend on how much closer it was. If the moon were only slightly closer, the effects would be relatively mild. However, if the moon were much closer, the effects could be more severe, potentially even making Earth uninhabitable.

The Roche limit is the distance within which a moon would be torn apart by the tidal forces of its parent planet. For the Earth-moon system, the Roche limit is about 9,500 kilometers. This means that if the moon were closer than 9,500 kilometers, it would be torn apart by Earth's gravity.

So, while the idea of a closer moon may seem appealing, it is important to remember that it would have a number of potentially devastating consequences.