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Two Planets Discovered Sharing the Same Orbit

Posted February 25, 2011 11:20 AM

From Popular Science:

In a cosmic first, the Kepler telescope has discovered two planets sharing the same orbit. There is a theory that says our moon was created when a body sharing our orbit crashed into Earth, but up until now no one had found evidence of co-orbiting planets elsewhere in the universe.

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Brave Sir Robin
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#1

Re: Two Planets Discovered Sharing the Same Orbit

02/26/2011 1:22 PM

Recent Alley Oop comic strips are running a similar vein.
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Tornado
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Re: Two Planets Discovered Sharing the Same Orbit

02/26/2011 2:45 PM

I thought the Lagrange points were 60° before and after.

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Re: Two Planets Discovered Sharing the Same Orbit

02/26/2011 6:09 PM

You are correct according to this link. I don't understand the "logic" of these people. If the orbits are stable, then how will the planets ever collide?

There was a movie based on this idea: The Planet on the Far Side of the Sun. It was 180 degrees, so could never be seen from Earth. Not a stable orbit place, but anything is possible in the movies.

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Re: Two Planets Discovered Sharing the Same Orbit

02/28/2011 8:24 AM

No orbit is perfect. The universe is filled with irregularities and external influences.

Eventually the orbits change and result in a more and more unstable orbital arrangement.

Think about Thermodynamics and chaos theory.
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