Dear History members: In February, 2010, History boards will begin the process of upgrading our community message board software. We are moving to a new community software, KickApps, that will provide greater functionality and ease of use. This transition will take place during the last part of February; the last day that the current boards will be available to you will be Feb. 28, 2010. We realize that many of you have posted great content over the years and might want to save your posts. Please take this time to go back through the boards and save what you want to keep on your own computer. These boards will no longer be accessible after February 28, 2010. If you would like to ask a question about the new boards, click here: http://boards.history.com/forum/Message-Boards-User/108 There will be more details to come as we roll out the new community software. Thank you for your continued patronage. We'll see you on the new, improved boards! Rebecca Cooper AETN Community Manager
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Posts:
52
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Silly theories? (The Moon)
Aug 19, 2007 1:50 AM
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I have trouble accepting the most recent and widely used theory about how the moon was formed. That is, an asteroid (or meteor) had hit Earth and the material blown apart from our planet had created the moon. I am a bit skeptical of this theory and would like others to input their thoughts to broaden my take on this. I am still profound to the very first theory of the creation of the moon, where it was formed during the same time earth was and of the same components. The reason that the first theory was demoted, was that the material in which the moon makes up, doesnt comply with the same stuff from that on earth. If the moon doesnt consist of the same realitive materials as earth, how is it, then, a piece of the earth?
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Posts:
73
From:
spokane, wa
Registered:
6/25/07
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(2 of 34)
Re: Silly theories? (The Moon)
Aug 19, 2007 9:12 AM
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They estimated it was a planet the size of mars that hit earth to create the moon. I dont fully agree with this theory either but its the best one ive hear so far. Im thinking if a body the size of mars hit an early earth our orbit around the sun wouldn't be perfect, but kaotic and offset.
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Posts:
48
From:
Delft Polly/ Tech-Univ. Holland city of masterpainter Vermeer
Registered:
8/17/07
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(3 of 34)
Re: Silly theories? (The Moon)hitting Eart twice as'Phaeton.'
Aug 19, 2007 9:37 AM
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dear READER PALEONTOLOGISTS are beating around the Bush about the Moon because the Truth is too phantastic. The Moon already was ceated by a collision of Planet Venus with Planet Jupiter, from which said collision the socalled Giant PALLAS or Venus'sister'Pallas was resulted. This erratic moon was captured by the Earth's gravity and crashed on Antartica in 1075 bc which resulted in the Cracking-open of the Mountainrift-Atlantic-Ocean of Earth's crust. the second Moon crash occurred in 855 bc on Hawaii-isle and this caused that giant TSUNAMI that went around the globe and finnally hit and immersed'Atlantis(= ADEN.) This last bounch of the Moon towards Earth was called in Myth the Churning of the MilkSea because Earth revolved as a TIPPE-TOPPleans is in regards to the Axis before-855 bc still standing on iot's head. These moon-collisions with Earth are from historical times and were named the'WAR-of-the-GODS'when the STARSIGNS were fighting eachother. MOON crashing unto Earth is described in the Myth about PHAETON, or PHAETHUSA or TYPHON(= Levathian or Apophis in the Bible.) She wass that Falle-Angle Lucifer that fell to Earth at the Land of PUNT(= Aden.) In Egypt the son of Osiris(= Mars)Horus(= Mercury) was fighting SET(= ATON.)or SETEN/=SATAN. Thus this means that both Mars/ Moon and Mercury have once collided in Mid-Air above or in view of Priests on Earth. In describing this incident Dr Velikovsky has rediscovered a whole piece of 'forgotten history. Sincerely '; bluehue ' dd. Aug-19- 2007 -- AT-LANT-is the'LAND-of-AD'in KORAN, this Kingdom,florished:1075-855bc Today:Ras-ADEN>Gulf-of-ADEN was the Atlantic-SEA bordering Indian-OCEAN REFUGIES from AD's destruction founded the colonies: Spain & Greece, no earlier than 1000 bc. at MELOS-1 Atlantis-2005-Conference: 55 Atlantologists were barking-up the wrong tree. other Locations elsewhere: Antartic, india-Gujarat-or America is a fallacy -- Edited by bluehue at 08/26/2007 11:04 AM
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21
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8/8/07
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Re: Silly theories? (The Moon)
Aug 19, 2007 3:54 PM
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Our moon is huge compared to our planets' moons. Mars' 2 moons are asteroids, obviously. No other world in the inner solar system has a moon even closely like ours. That's why theories of the moon have to be huge. Our moon is 1/4 the size of our planet. It's pretty huge.
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Posts:
4,302
From:
Delaware
Registered:
10/15/01
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(5 of 34)
Re: Silly theories? (The Moon)
Aug 20, 2007 7:50 AM
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True. Also appears to be the only planet with life. Mercury lost most of its atmosphere due to the proximity to the Sun. Venus appears to have been flipped by a giant impact. It spins backwards and this probably laid waste to any possibility of life forming there. Mars looks like it once had water, but it too lost its atmosphere.
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Re: Silly theories? (The Moon)
Aug 20, 2007 4:17 PM
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Even is this did happen along time ago, should there not be alot more evidence on our planet to back this up. The earth should have a giant crater where collision happened. Also, if moon is indeed made up from a collision on the earth, why are materials of the earth and moon different? Like General posted, Venus is really abnormal from the probable cause of an impact. The moon is what keeps this palent in check and possibly the answer as to why life can surface on Earth. A result of 2 large bodies colliding? I highly doubt so. -- Edited by Wanderer_of_the_Stars at 08/20/2007 4:31 PM
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Posts:
2,587
From:
SoCal
Registered:
9/10/03
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(7 of 34)
Re: Silly theories? (The Moon)
Aug 21, 2007 12:29 PM
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Wanderer, here is geological evidence from wikipedia.com. You may think the theory is silly, but it is the best they have. http://en.wikipedia.org/wiki/Moon_Formation "Indirect evidence for this [Mars-sized object called Orpheus] impact scenario comes from rocks collected during the Apollo Moon landings, which show oxygen isotope compositions that are nearly the same as the Earth. The highly anorthositic composition of the lunar crust, as well as the existence of KREEP-rich samples, gave rise to the idea that a large portion of the Moon was once molten, and a giant impact scenario could easily have supplied the energy needed to form such a magma ocean. Several lines of evidence show that, if the Moon has an iron-rich core, it must be small. In particular, the mean density, moment of inertia, rotational signature, and magnetic induction response all suggest that the core is less than about 25% the radius of the Moon, in comparison to about 50% for most of the other terrestrial bodies. Impact conditions can be found that give rise to a Moon that formed mostly from the mantles of the Earth and impactor, with the core of the impactor accreting to the Earth, and which satisfy the angular momentum constraints of the Earth-Moon system." -- Edited by Airbrush at 08/21/2007 12:30 PM
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Posts:
4,302
From:
Delaware
Registered:
10/15/01
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(8 of 34)
Re: Silly theories? (The Moon)
Aug 22, 2007 4:29 PM
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Hey Wander, I thought the Moon episode theorized that the impact occurred when the Earth was not completely solid. More molten and not yet cooled. If this was the case then this might have happened... There would be no impact crater. The molten Earth would fill in the dent so-to-speak. All of the lighter material (elements) was floating on the surface of the molten Earth, therefore the lighter materials were ejected and this formed the moon. That is why the Moons material is made up of lighter materials then those found on earth. All the iron and heavy materials were lower inside the molten Earth and were not blown off during the impact. As for the two bodies having different materials, I believe the moon is made up of a lot of volcanic rock, (basalt, breccia) which is found on Earth. No sedimentary rock since there is no water. No metamorphic rock since there is no plate tectonics. In fact the only metamorphic type rocks, as well as mountains found on the moon, would have been produced by outside forces, i.e. an impact from an asteroid or comet. This is what I got from the Moon Episode.
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52
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Re: Silly theories? (The Moon)
Aug 22, 2007 6:17 PM
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Yes yes yes! Thank you everyone, for your input has helped my understanding. I am still ignorant to decline that the moon could have been derived during the big bang. From what airbrush had posted, the composition of the luna crust and the existence of KREEP-rish samples gives thought that the moon was once molten. I see this as relevance towards the first theory more then the current. The theory of how a magma ocean was created is not backed up, just presumed that maybe a collision could be the cause. Also, the identical oxygen istotpe rocks prove similarities between the moon's surface and Earth's. Geologists even visit certain places on our planet to compare and relate to the moon's surface specifically. And yet again, the reason the first theory was demoted is that the earth's surface is not similar to the moon's. /sigh One more thing, the moon is claimed to be part of the earth, not Theia (or maybe both?). What happened to this celestial body?
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52
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Re: Silly theories? (The Moon)
Aug 22, 2007 6:44 PM
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Heh, I am so retarded. This whole time I was convinced that only one theory could be right. The earth had to be hit by something at a decisive angle for a rotation around the planet to happen, but when? During the formation of the planets. This could explain the moons material and the the relation these two bodies share (in orbit and composition). A big bang, its not pretty. Of course two planets could colide.
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Posts:
4,302
From:
Delaware
Registered:
10/15/01
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(11 of 34)
Re: Silly theories? (The Moon)
Aug 23, 2007 6:02 AM
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True another thing to remember is that the moon was closer to the planet early on and has steadily falling out of orbit. The result is that the spin of the Earth has slowed. Evidence of this slowing can be seen in fossil trees and other animals who left rings or other evidence behind. A six hour day early in the Earth's history seems to point toward a collision of some kind. An object captured that close to Earth most likely would have collided with the planet as well.
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Posts:
2,587
From:
SoCal
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(12 of 34)
Aug 23, 2007 7:59 AM
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Wanderer, they call the theory the "Big Whack" so as not to confuse it with the "Big Bang" which was the birth of the universe. When Theia whacked the Earth the impact was so immense that both planets merged into one chaotic mass of molten matter that spun the future Moon matter (mostly mantle but a little iron-rich material) and flung into orbit around the larger molten mass that became the Earth. Yes General, the Moon is moving farther away and we may lose it in the distant future, as the Earth's rotation slows. Something about the tidal lock between the Earth and Moon and the friction of the Earth's oceans' tides that I don't understand, is causing this. By supressing tidal action on Earth, by building massive artificial reefs throughout the world's oceans could slow the Moon's escape from Earth, which would be a disaster. -- Edited by Airbrush at 08/23/2007 8:03 AM
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Posts:
4,302
From:
Delaware
Registered:
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(13 of 34)
Aug 23, 2007 3:59 PM
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Hey Airbrush. So what will happen first, will we lose the Moon and the Earth be laid waste, or will the Sun go nova and destroy everything, or will Andromeda get here and rip the place to pieces with the collision?
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Posts:
2,587
From:
SoCal
Registered:
9/10/03
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(14 of 34)
Aug 23, 2007 4:17 PM
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I think we lose the Moon first. Let me do a little research on Google, maybe something like "Moon Receding".
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Posts:
73
From:
spokane, wa
Registered:
6/25/07
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(15 of 34)
Aug 24, 2007 2:59 PM
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I think they said it receeds 1.5 inches each year so I dont have time to do the math but I think we will loose the moon first. But by that time I think we will have advanced far enough to travel to another planet in our galaxy. And earth wont end when we loose it but our season will be all out of wack, and it would not be a fun time on planet earth. at least we will be long gone by then.
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