Solar System Grade 4 solar system solar system game turtle diary Solar System 4 Grade
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Oxygen isotopes on the Earth and Moon measure the same according to the specimens gathered from the Moon, meaning that the Earth and Moon did indeed form at the same distance from the Sun. Finding a theory that could satisfy all three of these specific facts would prove to be rather difficult. There have been three major theories about how the moon was created that have been discounted. Below we will discover what each of these three theories proposed and why they were deemed to be unlikely or impossible. The Fission Theory. The Fission Theory proposes that the Moon was created in the early history of our solar system when something caused the Earth to break apart and a large part of the Earth was cast into space which eventually formed into the Moon. This idea supported the fact that the Earth and Moon share similar mantles, but where this theory falls apart involves the actual physics it would take to create such a scenario. The amount of angular momentum and energy required to create this situation would make the current placement of the Earth and Moon next to impossible. Thus, the fission theory has been deemed incorrect. The Capture Theory. The Capture Theory contends that the Moon came to be obtained by the Earth after it formed in a different location in the solar system, shedding light on the Moon's different composition. There are a couple problems with this scenario. Since we know that the Earth and Moon have the same oxygen isotopes on their surfaces, therefore meaning they would have the same amount of baking from the Sun, it doesn't explain how the Moon would have encountered the extra baking on its surface. The physics behind this call for a lot of specific things to happen, such as the Moon entering Earth's gravitational speed at just the right speed, at just the right distance to allow for the current set-up. Not only would it have to approach the Earth with these two requirements, but there would also have to be something that could slow the Moon down., however, capture into the Moon's present orbit is very improbable. Something would have to slow it down with just the right gravitational pull to cause the Moon to fall into Earth's orbit. While complicated, this could have been possible, but it is very unlikely. The Co-Formation Theory.
and here is another
Van Allen Radiation Belts. According to this widely known argument for the fake moon landing theory, the astronauts would not be able even to survive their trip after receiving a lethal dose of radiation, both from the Van Allen radiation belts surrounding the Earth and solar radiation beyond Earth's magnetic field.
In dramatic contrast, the inner region of our Solar System, where our Earth dwells--along with Mercury, Venus, and Mars--is relatively barren of moons. Mercury and Venus have no moons, and Mars is orbited by a small duo of deformed moons, Phobos and Deimos, that are probably asteroids that escaped from the Main Asteroid Belt between Mars and Jupiter billions of years ago--only to be captured by the Red Planet's powerful gravitational embrace. Our Earth is the only inner planet that possesses an impressively large, spherical Moon.
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A fourth, more recent model, is based on the existence of a synestia. A synestia is a doughnut-shaped cloud composed of vaporized molten rock. This recently discovered inhabitant of the Universe is believed to take shape when planet-sized bodies catastrophically blast into one another with both high energy and angular momentum. Soon after the discovery of these puffy celestial "doughnuts" in 2017, planetary scientists came to the realization that they may have a new way to explain Moon-birth. The ancient collisions, that create a synestia, are so violent that the objects that form from these cosmic crash-ups melt and partially vaporize. Ultimately, after having cooled off sufficiently to solidify, they create (almost) spherical planets, such as those inhabiting our own Solar System.
Earth's Moon is the fifth largest moon in our Solar System, and the only world beyond our own that we have walked upon, leaving our footprints behind in moon dust as a silent testimony that once we existed, and had been there. Our Moon is both the brightest and largest object in Earth's night sky, and many astronomers think that our bewitching lunar companion was born as a result of an ancient collision between our planet and an ill-fated Mars-sized protoplanet that has been named Theia. There are other theories that have been devised to explain our Moon's origin, but the Giant Impact theory is considered to be the best explanation. When the doomed Theia blasted into the primordial Earth, it launched into the sky above our planet the debris resulting from that catastrophic crash. The debris eventually coalesced into Earth's Moon.
The crew was able to complete the mission, which would have put a big smile on the face of former President John F. Kennedy. President Kennedy had set a goal to put a man on the moon prior to the end of the decade (1960's) and this goal had now not only been fulfilled, but broadcast worldwide for any who wished to see the triumphant event. Clearly, this amazing feat proves that anything is possible.