Did Several Moons Once Orbit Earth?

mercurial

mercurial

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The history of planet Earth is a fascinating story, involving catastrophic collisions with other small planets and a veritable plethora of asteroid impacts. The prevailing theory about the formation of the moon is called the giant impact hypothesis: the theory goes that a Mars-sized object, known as Theia, crashed in to the young Earth. What was left was Earth, and its moon.

A new computer model suggests, however, that the Moon may not have been the only reminder of that big collision. Jack J. Lissauera of the Space Science and Astrobiology Division, NASA Ames Research Center, and John E. Chambers of the Department of Terrestrial Magnetism, Carnegie Institution of Washington, have suggested that moonlets called Trojans may have been left behind in the collision.

"The giant impact that likely led to the formation of the Moon launched a lot of material into Earth orbit, and some could well have been caught in the Langrangian points," -points in space where the gravity between two objects cancels the other out, said says study team member Lissauer. Their theory places small moonlets, or Trojans, in Earth’s orbit, for up to 100 million years.

Over time, gravitational tugs from other planets would have eventually altered Earth’s orbit, even if it was only slightly. Thus, the Langrangian points would have altered, leaving the Trojans once again susceptible to gravity. From there, they could be anywhere by now, or destroyed entirely.

"The perturbations from the other planets are very, very tiny," said Lissauer. But they change the shape of Earth's orbit, which subsequently changes the effect that the Sun's gravity has on the moons, that "...is what ultimately destabilizes the Trojans."

A separate yet similar model created by Matija Cuk, an astrophysicist at the University of British Columbia in Canada has suggested that smaller, asteroid sized objects, only a few tens of kilometers in width, could have lasted longest in those stationary positions. She believes that they could have lasted a lot longer too, up to a billion years or more.

However she noted that “they would have looked more like Jupiter or Venus in the sky than a satellite. They would have resembled very bright stars.”
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Source
 
Devill said:
Very interesting, but this isn't a new "theory"/finding IIRC.
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You would be quite correct!

This theory goes back all the way to the Sumerians, according to a couple of Translators.

The Sumerians were a bit more specific though. They go on to say the Earth had a different orbit, one that placed it between Mars and Jupiter. They then say that something collided with Earth pushing it to our present orbit. The pieces that broke off the planet and its moons (which broke into pieces too) became the asteroid belt. The object that hit the Earth is then said to have lost one of its moons to Earth, Earth's gravity captured the moon.

The object that hit the planet Earth is then said to have become part of our solar system. This object is sometimes referred to planet x or Nibiru, but it could of been something else.

Strangely this theory has been around for ages, it is interesting seeing scientific theory getting closer and closer to ancient records.
 
By gravity changing the langrangian points, whats to say that one of the side effects was that one of these "trojans" then collided with Earth and killed the dinosaurs?
 
agerbon said:
You would be quite correct!

This theory goes back all the way to the Sumerians, according to a couple of Translators.

The Sumerians were a bit more specific though. They go on to say the Earth had a different orbit, one that placed it between Mars and Jupiter. They then say that something collided with Earth pushing it to our present orbit. The pieces that broke off the planet and its moons (which broke into pieces too) became the asteroid belt. The object that hit the Earth is then said to have lost one of its moons to Earth, Earth's gravity captured the moon.

The object that hit the planet Earth is then said to have become part of our solar system. This object is sometimes referred to planet x or Nibiru, but it could of been something else.

Strangely this theory has been around for ages, it is interesting seeing scientific theory getting closer and closer to ancient records.
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wasnt it orpheus that collided with pre-earth which created the moon?

ah nevermind, OP says theia aka orpheus
 
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agerbon said:
You would be quite correct!

This theory goes back all the way to the Sumerians, according to a couple of Translators.

The Sumerians were a bit more specific though. They go on to say the Earth had a different orbit, one that placed it between Mars and Jupiter. They then say that something collided with Earth pushing it to our present orbit. The pieces that broke off the planet and its moons (which broke into pieces too) became the asteroid belt. The object that hit the Earth is then said to have lost one of its moons to Earth, Earth's gravity captured the moon.

The object that hit the planet Earth is then said to have become part of our solar system. This object is sometimes referred to planet x or Nibiru, but it could of been something else.

Strangely this theory has been around for ages, it is interesting seeing scientific theory getting closer and closer to ancient records.
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**IF** the anchient races records / findings are correct I seriously wonder what happened to them / their culture that all that tech&knowledge dissapeared.....

Lol, :eek::eek: If they are correct might the mayan 2012 thing not then stand a better chance of being correct? :p:D
 
Devill said:
**IF** the anchient races records / findings are correct I seriously wonder what happened to them / their culture that all that tech&knowledge dissapeared.....

Lol, :eek::eek: If they are correct might the mayan 2012 thing not then stand a better chance of being correct? :p:D
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Bullsh1t. They just spent lots of time thinking, as opposed to posting worthless comments on forums. :p
 
Devill said:
**IF** the anchient races records / findings are correct I seriously wonder what happened to them / their culture that all that tech&knowledge dissapeared.....

Lol, :eek::eek: If they are correct might the mayan 2012 thing not then stand a better chance of being correct? :p:D
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The Sumerians never claimed the knowledge has theirs. They gave full credit to their gods. These are the same people who gave us the wheel, writing, beer, to name a few.

If the records they left us are true? I know not! I can only say they did leave them. If science today agrees with a lot of the things the Sumerians mention (which it does), one can only wonder what else these people could of been right about.

Has for 2012, not much one can say about it. The Mayans had a lot of their predictions come true, so it wouldn't surprise me if this one was true too.
 
agerbon said:
The Sumerians never claimed the knowledge has theirs. They gave full credit to their gods. These are the same people who gave us the wheel, writing, beer, to name a few.

If the records they left us are true? I know not! I can only say they did leave them. If science today agrees with a lot of the things the Sumerians mention (which it does), one can only wonder what else these people could of been right about.

Has for 2012, not much one can say about it. The Mayans had a lot of their predictions come true, so it wouldn't surprise me if this one was true too.
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The Greeks were right about atoms (to a degree), still doesn't mean Atlantis is real. Though if they discover it tomorrow, I will happily take my foot out of my mouth.
 
smokey said:
The Greeks were right about atoms (to a degree), still doesn't mean Atlantis is real. Though if they discover it tomorrow, I will happily take my foot out of my mouth.
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Hence why I said "If the records they left us are true? I know not! I can only say they did leave them."
 
smokey said:
The Greeks were right about atoms (to a degree), still doesn't mean Atlantis is real. Though if they discover it tomorrow, I will happily take my foot out of my mouth.
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Lol, very true.

But one has to wonder how they knew / guessed a lot of things before we many centuries later confirmed them.


I have a feeling they had MS computer back then but they crashed and all the info got lost :p
 
Devill said:
Lol, very true.

But one has to wonder how they knew / guessed a lot of things before we many centuries later confirmed them.


I have a feeling they had MS computer back then but they crashed and all the info got lost :p
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LoL sounds just about right ;)
 
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