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Did Earth Once Share Its Orbit with a Mars-Sized Planet? New Kepler Data Suggests "Yes"

Theia

Hidden in the mass of data from the Kepler telescope is a planetary system that has two of its apparent planets share the same orbit around their star. If the discovery is confirmed, it would support the theory that Earth once shared its orbit with a Mars-sized body, labeled Theia, that later collided with it, creating the moon.

The two planets are part of a four-planet system dubbed KOI-730 that circle their sun-like parent star every 9.8 days at exactly the same orbital distance, one permanently about 60 degrees ahead of the other. In their night sky, each would appear as a constant, blazing light.

When one body orbits a star or large object, there are two Lagrange points along the planet's orbit where a third body can orbit stably. These lie 60 degrees ahead of and 60 degrees behind the smaller object. A groups of asteroids called Trojans, for example, lie at these gravitaional sweet spots along Jupiter's orbit.

"Systems like this are not common, as this is the only one we have seen," says Jack Lissauer of NASA's Ames Research Center in Mountain View, California. Lissauer and colleagues describe the KOI-730 system in a paper submitted to the Astrophysical Journal (arxiv.org/abs/1102.0543).

Will KOI-730's co-orbiting planets collide to form a moon someday? "That would be spectacular," says Richard Gott of Princeton. That may be so, but simulations by Bob Vanderbei at Princeton suggest the planets will continue to orbit in lockstep with each other for the next 2.22 million years at least.

The Daily Galaxy via newscientist.com

Comments

Until disturbed, of course.

But I seem to be missing something - how can each appear as "a constant, blazing light" in the night sky? Don't we mean in the bulk of the day sky, for the night sky is the side pointed away from the sun, and being 60 degrees apart (per the sun axial) would that not have the night sides of each planet pointing more away from each other (except perhaps the dawn/dusk transitional line of sight).

Until disturbed, of course.

But I seem to be missing something - how can each appear as "a constant, blazing light" in the night sky? Don't we mean in the bulk of the day sky, for the night sky is the side pointed away from the sun, and being 60 degrees apart (per the sun axial) would that not have the night sides of each planet pointing more away from each other (except perhaps the dawn/dusk transitional line of sight).

Until disturbed, of course.

But I seem to be missing something - how can each appear as "a constant, blazing light" in the night sky? Don't we mean in the bulk of the day sky, for the night sky is the side pointed away from the sun, and being 60 degrees apart (per the sun axial) would that not have the night sides of each planet pointing more away from each other (except perhaps the dawn/dusk transitional line of sight).

"If the discovery is confirmed, it would support the theory that Earth once shared its orbit with a Mars-sized body, labeled Theia, that later collided with it, creating the moon."

While I can see that this information would support the idea that the Earth *COULD* share its orbit, it only shows that it isn't impossible. Which I think we've already known. It doesn't actually provide evidential support that such a thing actually was what happened.

I suspect the reason they say each planet would appear as a bright streak in the sky on both planets, is that due to the closeness to their sun they are likely leaving trails of heated material - and do not revolve as they likely have no moons. So they are stationary as they orbit their sun (just as the moon does to us by presenting only one side to us), one side heated one not, and their position never moves in the sky because of this.

Just my guess.

If you want to know the true history of this solar system (and much more) please search for "Malona" at my site and my blog.

Please understand, we have been trying - for many years - to get the mainstream media embargo lifted/penetrated, and to get some of the know-it-all "scientists" to get off their egos and delve into this treasure of information. You can find my sites under Theyfly.

If you want to know the true history of this solar system (and much more) please search for "Malona" at my site and my blog.

Please understand, we have been trying - for many years - to get the mainstream media embargo lifted/penetrated, and to get some of the know-it-all "scientists" to get off their egos and delve into this treasure of information. You can find my sites under Theyfly.

The other theory is that earth passed close by the planet Nibura (that has an elliptical orbit and comes close to earth every 3600 years). Nibura's gravity ripped a chunck of the earth off to create the moon.

CHUNK OF ORIGINAL EARTH FOUND... A Late Birth for the Earth and Moon... Modern Science and the Ancient Writings on the Genesis of the Solar System...Silver tells a volatile story of Earth's origin: Water was present during its birth... Scientists finds evidence of water ice on asteroid's surface...The Moon may have formed in a nuclear explosion:
http://cristiannegureanu.blogspot.com/2010/08/chunk-of-original-earth-found.html

I believe that these planets are tidally locked to their star, being so close, 10 day years. Thus their sun would always be in the same spot in the sky, and the companion planet would also always be in the same spot. Their sun would be directly overhead at the equator at the point closest to the sun, and the planet would be 60 degrees off to the side, forming an equilateral triangle(60 degree internal angles).

Oh wow, OK this really does make a LOT of sense.

www.complete-privacy.eu.tc

Thanks for a great post and interesting comments.keep good working.

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