Possible Planet 9. And 10 ?
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« on: November 02, 2017, 07:55:24 pm »

With pluto being demoted. Nasa says there "could be " more planets with in our solar system . Thoughts ?
I'm 37 years old and I was brought up , that pluto was the end of our system.  Is this amazing or BS ?
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« Reply #1 on: November 03, 2017, 03:01:42 pm »

It comes down to what the definition of a planet is.

With Pluto I think they just got sick of having to use the phrase 'except Pluto':  The orbits of the planets do not overlap - except Pluto, the orbits of the planets are on the same plane - except Pluto....

The next planet-like object further out from Pluto is Sedna.
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« Reply #2 on: November 04, 2017, 10:35:08 pm »

I thought that could was really are, or is one massive planet in Kyper Belt. Remember, they're assuming there is a planet because of the calculations of what they assume and observe and the effects of that mass on the planets we already know about.

To me, it's amazing that they can find planets rotating around distant starts and calculate whether or not they are in the habitable zone but they can't find a giant planet within our own solar system -- that's how large our tiny little patch of the Milky Way is.
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« Reply #3 on: November 05, 2017, 05:20:45 am »

The ways that they detect planets around other stars is either by tiny fluctuations in movement (gravity from a planet is moving the star a little) or fluctuations in brightness (when a planet passes between the star and us.)

Distant bodies in our solar system take so long to travel in their orbits that we might be trying to figure things out with only 1% of the information.  It's fascinating how little of space we've actually looked at.
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« Reply #4 on: November 05, 2017, 01:37:18 pm »

The ways that they detect planets around other stars is either by tiny fluctuations in movement (gravity from a planet is moving the star a little) or fluctuations in brightness (when a planet passes between the star and us.)

Distant bodies in our solar system take so long to travel in their orbits that we might be trying to figure things out with only 1% of the information.  It's fascinating how little of space we've actually looked at.

Keep talking like this and I'm going to think you're flirting with me.  Grin
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