The Moon Compare To The Moons Of Other Planets

The moon is by far the biggest and most easily recognizable object in earth’s atmosphere that can be perceived by the naked eye on a cloudless night. It is hypothesized that it came into existence nearly 4.5 billion years ago, from residual debris after a planetary body collided with earth. Although, considered the runner-up to the sun as the second brightest object in the sky, its illumination is deceitful, insomuch as the moon is not a source of light, but instead reflects the sun’s illumination from the half of the moon that is in direct alignment with the sun at that time. More readily identified as a satellite of the earth rather than as a planet itself or even a star, it has a diameter a quarter of the size of earth’s size and it

Have you ever considered that the moon may not be exactly what it seems to be? Science says that the moon was a result of the Earth colliding with another planet, causing a rocky mass to break free from the earth and be pulled into orbit by the force of gravity. Conspiracy theorists have considered the possibility that the moon may be something more than just a rocky mass orbiting the earth. A theory that has been created regarding our moon is called The Hollow Moon Theory. This theory tries to prove that the moon may just be a cover or a protective layer around an alien's UFO. It may be hard for some to go against scientific research, but there is a possibility that something other than a collision is responsible for the formation of our moon.

The only limit on the size of the moons of a planet is that they must be smaller than the planet. Thus, it is coincidence that Jupiter's and Saturn's large moons are as small as they are: if Jupiter happened to have a moon one-fourth of its own size (as Earth does), that moon would be larger than Earth, Venus, Mars, Mercury and Pluto, and all of these “planets” would have to be classified as asteroids. If Jupiter happened to have a moon half its own size (as Pluto does), that moon would be larger than all of the other planets except Saturn, and we would have a two-planet solar system with seven very large asteroids. The problems with this classification criterion are that they are arbitrary and non-general.

There are many different theories about how the moon was formed. People believe different things. I believe one is more reliable than all the others. I think the Big impact theory is the most trustworthy. The Big Impact theory has many different pieces of evidence behind it. The other ones i could barely find any.

In 1975, two scientists by the name of Dr. William K. Hartmann and Dr. Donald R. Davis, came up with a groundbreaking new theory on how the moon was created. Their theory stated “At the time Earth formed 4.5 billion years ago, other smaller planetary bodies were also growing. One of these hit earth late in Earth 's growth process, blowing out rocky debris. A fraction of that debris went into orbit around the Earth and aggregated into the moon” (Hartmann & Herres 1). This theory is known as the Giant Impact Theory and is the accepted theory in the scientific community of how the moon was created. Even though this theory is accepted by most, there are still some people who don’t hold this theory to be true. I agree with Davis and Hartmann’s Giant Impact Theory that a great collision occurred and created the moon. The Giant Impact Theory is supported by the lack of iron on the moon, the moon rocks from the Apollo missions, and its acceptance in the scientific community.

Many believe that while Early Earth was undergoing accretion, it had a massive collision with a large body- as huge as the size of Mars (see Fig. 2.). This collision produced a shower of debris around the Earth and thrusted it into space (Grotzinger and Jordan, 2010). “According to this theory, the Earth reformed as a boy with an outer molten layer hundreds of kilometres thick- a magma ocean.” (Grotzinger and Jordan, 2010). Marshak (2007) deduced that the Moon was formed from the accretion of the debris floating around the Earth. He also suggested that the Moon’s composition resembles that of the mantle because of the way the Mars-sized body collided with the Earth. From this, we can assume that when the collision happened- it did not disturb the Earth’s iron-nickel core that was already formed. The formation of the Moon must have happened 4.51 billion years ago- between the early stages of the accretion of the Earth which was 4.56 billion years ago,) and “the formation of the oldest Moon rocks brought back by the Apollo astronauts (4.47 billion years ago,)” (Grotzinger and Jordan, 2010).

Pluto is smaller the Earth's moons and a handful of others moons. Like the galilean moons I mentioned in a previous journal entry. Pluto has 5 moons. Charon, Styx, Nix, Kerberos, and Hydra. Charon, is the largest of the five moons, but did you know that Pluto used to be a Neptune moon, but somehow left its orbit.

The most favoured theory on the genesis of the moon that serves as a satellite to the Earth is the Theia Impact Hypothesis. When the early solar system was forming in the first 100 million years after the dust cloud began to coalesce, along with the recognized planet that survived until today, there were other proto-planets forming and orbiting our common star, the sun. Many of these proto-planets were ejected from the solar system, or else crashed into larger proto-planets, either destroying both in the process, or melding into one larger proto-planet. One of these theorized proto-planets was a Mars sized rocky body, known as Theia, which shared the Earth's orbital path.

The currently favored theory about how the Moon formed is called the Impact Theory. It states that billions of years ago, a Mars-sized object collided with Earth, which was still molten. This object is named Theia, after the Titaness in Greek and Roman myth who is the mother of the deities of the sun, the moon, and the dawn (Helios/Sol, Selene/Luna, and Eos/Aurora, respectively). Pieces of Earth and of Theia were ejected into outer space together, combining to form what would become Earth’s only natural satellite.

One question may be, How was the moon created? Well after some research I have found on that makes sense to me. I chose the Giant Impact Hypothesis. It was first introduced in the 1970’s. The theory was that a mars-sized rock collided with the earth. The debris that was left over was formed into the moon. The mars sized-rock had name too. The rock is known as Thia.

The moon has had a profound impact on the earth’s evolution as well as life on Earth. Our moon is believed to have been created about 4.5 billion years ago, when a large planetoid crashed into the Earth, spraying space debris which was gradually captured by gravity 2. Eventually, this material solidified into a body which we know as our moon. 3. This process is unique in our solar system as the other planet’s moons were formed by capturing free floating bodies with their gravity 3.

We are on the top of the Astronomy Tower. Unlike usual classes that are at night, it is twilight because it is when the planet can be easily seen. It's quite cold and the weather is cloudy but that is not a problem because our magical telescopes allow us to see throught the clouds.

Titan is Saturn’s largest moon and the second largest moon in the entire solar system. It is about half the size of Earth and almost as big as Mars. Also, Titan is the only moon in the solar system with clouds and a dense, planet like atmosphere. Because of this, scientists believe that conditions on Titan are similar to Earth’s early years. Titan remains one of the most Earth-like worlds we have found. It is amazing how the Earth and Titan, with so much distance between them, can

The moon Dione, was discovered in 1684 by Giovanni Cassini. It is the fourth largest moon to orbit the planet Saturn and has a diameter of 1123 kilometers. The density of Dione is 1.48 times as dense as water with a core made of rock and ice. Dione has a similar distance from Saturn as our moon has to Earth, 377,400 kilometers. Like our moon, one side of it always faces its parent planet. It takes 2.7 days for Dione to orbit Saturn. The surface of Dione is covered in craters, heavier in some places, with the largest being 62 miles wide. It is believed that a recent impact has turned or spun the moon 180 degrees because its heaviest cratered area is on the trailing side instead of its leading

Mars has two moons. Their names are Phobos and Deimos. They are made of carbon-rich rock mixed with ice and are covered in dust and loose rocks. They have creators all over from meteorites hitting them. They are much smaller than Earth’s moon and are shaped irregularly since they don't have enough gravity to pull themselves into a more circular shape.