What are some theories on the formation of Earth's Moon? (a popular theories and then some not so popular)

Question

If you find any theories, also leave a website so I can further research it. Thanks so much for your help.

Answer 1

1.The Fission Theory: The Moon was once part of the Earth and somehow separated from the Earth early in the history of the Solar System. The present Pacific Ocean basin is the most popular site for the part of the Earth from which the Moon came.

2.The Capture Theory: The Moon was formed somewhere else, and was later captured by the gravitational field of the Earth.

3.The Condensation Theory: The Moon and the Earth condensed together from the original nebula that formed the Solar System.

4.The Colliding Planetesimals Theory: The interaction of earth-orbiting and Sun-orbiting planetesimals (very large chunks of rocks like asteroids) early in the history of the Solar System led to their breakup. The Moon condensed from this debris.

5.The Ejected Ring Theory: A planetesimal the size of Mars struck the earth, ejecting large volumes of matter. A disk of orbiting material was formed, and this matter eventually condensed to form the Moon in orbit around the Earth. :)

Answer 2

The most accepted theory at this point is that the early Earth suffered a collision with an asteriod, causing it to shed massive amounts of material which then colalesed into the Moon. This theory is supported by the fact that the Moon doesn't have an iron core, and thus cannot have been formed seperately in the early solar system.

Answer 3

Eri has the most popular theory. An older one that has lost grace is that the moon was formed tidally by centrifugal force. In this theory a small bulge in the surfae of a molten earth got spun off an formed the moon.

Answer 4

According to this recently new account "Big Splash", the young Earth, still red-hot beneath a thin new crust, was struck by a massive, contending planet approxmately the size of Mars. Most of the material from that body was incorporated into the liquefied Earth, adding to the mass of our planet. Vapor generated by intense heat when the collision occured squirted out into space. The vapor settled into orbit and condensed as the Moon, all this took many many millions of years to form.

Answer 5

In Indian mithology , it is said that the Moon and The earth were one , and used to protect a twelveth planet . The twelveth planet was destroyed by the other planets of our solar system , and the the planet , which once formed the planet that protected the twelveth planet , was separated , and so ... the Earth and Moon were formed .