If you look at the the sky sometimes at night, you'll see the moon which is an astronomical planet looking-like, orbiting the earth, and it's is the planet's only natural satellite.
The moon is the fifth largest satellite in the Solar System, and the largest among planetary satellites relative to the size of the planet that it orbits.
After Jupiter's satellite Io, the moon is the second densest satellite in the Solar System among those whose densities are known.
It is thought that the Moon was formed about more than 4.51 billion years ago, but not long after Earth... The most widely accepted explanation is that the Moon formed from the debris left over after a giant impact between Earth and a hypothetical Mars-sized body called Theia. A new research of Moon rocks, even though not rejecting the "Theia" hypothesis, it suggests that the Moon may be older than previously thought...
The Moon is always in a synchronous rotation with Earth, that's why it always shows the same side to Earth, the close side of course.. Because of libration, slightly more than half of the total lunar surface can be viewed from the earth, the near side is marked by dark volcanic maria that fill the spaces between the bright ancient crustal highlands and the prominent impact craters.
The Moon is the second-brightest celestial object regularly visible in Earth's sky after the sun. Its surface is really dark, although compared to the night sky it appears very bright, with a reflectance just slightly higher than that of worn asphalt.
It has a gravity produces the ocean tides, body tides, and the slight lengthening of the day. Its average orbital distance is 384402 km. Which is about thirty times the diameter of Earth. The Moon's apparent size in the sky is almost the same as that of the Sun, since the star is about 400 times the lunar distance and diameter. Therefore, the Moon covers the Sun nearly precisely during a total solar eclipse. This matching of apparent visual size will not continue in the far future because the Moon's distance from Earth is gradually increasing.
Does The Moon Affect One's Mood?
Supporting the idea that the Moon might somehow be affecting patients’ sleep, Wehr¹ has found that as the days progress, their wake time moves steadily later, while their sleep time remains the same, meaning that the amount of time they sleep for grows longer and longer, until it abruptly shortens. This so-called “phase jump” is often related to the onset of mania.
¹Tom Wehr is a scientist emeritus at the National Institute of Mental Health is a psychiatrist, research scientist, author, and former chief of the Clinical Psychobiology branch at NIMH.
How The Moon Was Created
According to the giant-impact hypothesis, (sometimes called the Big Splash, or the Theia Impact), the Moon was formed from the ejecta of a collision between the proto-Earth and a Mars-sized planetesimal, approximately 4.5 billion years ago, in the Hadean eon (about 20 to 100 million years after the Solar System coalesced)
How Would Life Be Without The Moon?
If there is no moon, the tilt of our earth's axis would vary over time. This could create some weird weathers. Currently, thanks to our moon, our axis stays tilted at 23.5° degrees. But without it, the earth might tilt too far over or hardly tilt at all leading to no seasons or even extreme seasons.
The moon influences life as we know it on the Earth. It influences our oceans, weather, and the hours in our days. Without the moon, tides would fall, nights would be darker, seasons would change, and the length of our days would alter.
Nights would be darker. The next brightest object in the night sky after the moon is Venus, but it wouldn't be enough to light up the sky. A full moon is nearly two thousand times brighter than Venus is at its brightest.
A day on the earth, would only last between six and twelve hours. There could be more than a thousand days in one year! That's because the Earth's rotation slows down over time thanks to the gravitational force, or pull of the moon, and without it, days would go by in a blink.
What If The Moon Got Closer To The Earth?
If the moon got close to the Earth, it will increase the gravitational exertion of the satellite onto our planet. If it were slightly closer, the tidal bulge would grow. Low tides would be lower and high tides would be higher and any low lying coastline would be flooded.