Universe SandboxGeneral CategoryAstronomy & ScienceHoney, I Shrunk the Planetary System!
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Author Topic: Honey, I Shrunk the Planetary System!  (Read 258 times)
FiahOwl

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The last person standing after a battle is either Jackie Chan, or an Aeridané.
« on: January 11, 2012, 05:46:33 PM »


NASA's Kepler Mission Finds Three Smallest Exoplanets
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smjjames

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« Reply #1 on: January 11, 2012, 07:00:57 PM »
Russian stacking dolls (I forget what they're called, but they're doll within a doll within a doll x however many times) with planets anybody? Cheesy

Looks like we've got the whole RANGE of sizes between mercury and mars and between mars and earth and beyond. It shouldn't be s surprise that such a range exists, but this is just cool!

Edit: The exoplanet app shows one that is just inside that stars habitable zone, however there could be room for more a little further out and still be in the hab zone. The one that is in the hab zone is a bit bigger than Mars but might be too hot. From the diagram in the app, looks like there could be room for up to two or three planets and still be in the habitable zone.
« Last Edit: January 11, 2012, 07:32:18 PM by smjjames » Logged
deoxy99
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« Reply #2 on: January 11, 2012, 10:18:24 PM »
Quote from: smjjames on January 11, 2012, 07:00:57 PM
Russian stacking dolls (I forget what they're called, but they're doll within a doll within a doll x however many times)...
Russian dolls, that's what they are called.
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Darvince

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« Reply #3 on: January 11, 2012, 10:25:57 PM »
Quote from: deoxy99 on January 11, 2012, 10:18:24 PM
Quote from: smjjames on January 11, 2012, 07:00:57 PM
Russian stacking dolls (I forget what they're called, but they're doll within a doll within a doll x however many times)...
Russian dolls, that's what they are called.

In fact, they are actually called Matryoshka dolls in English, however, Russian nesting doll is the informal English name.
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smjjames

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« Reply #4 on: January 11, 2012, 10:29:30 PM »
Yea, Russian nesting dolls is what I was getting at.
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FiahOwl

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The last person standing after a battle is either Jackie Chan, or an Aeridané.
« Reply #5 on: January 11, 2012, 10:35:38 PM »
GAWD! STOP TALKING ABOUT RUSSIAN DOLLS!
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deoxy99
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« Reply #6 on: January 11, 2012, 10:38:40 PM »
Kolkolkol, My Soviet Pony.
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Darvince

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« Reply #7 on: January 11, 2012, 10:55:11 PM »
Okay, now, since Mars is about 0.10 earths, and Mercury is about 0.06 earths, taking into account the average density of the four rocky planets in our solar system, could we be able to assign approximate masses to them this way?
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FiahOwl

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The last person standing after a battle is either Jackie Chan, or an Aeridané.
« Reply #8 on: January 11, 2012, 10:59:27 PM »
Quote from: Darvince on January 11, 2012, 10:55:11 PM
Okay, now, since Mars is about 0.10 earths, and Mercury is about 0.06 earths, taking into account the average density of the four rocky planets in our solar system, could we be able to assign approximate masses to them this way?

No, the metaliccity of that system is different.
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Darvince

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« Reply #9 on: January 11, 2012, 11:09:28 PM »
Assuming that most red dwarfs have a slightly higher metallicity, I think it would be safe to assume that the average density of that system would be about 5.5g/cm^3 to 7g/cm^3, since metals have a higher density.
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