P is for Pluto

We DID it! Our solar system is complete!
And we came up with our own mnemonic phrase to remember the order.
 My Very Eager Monster Jumps Straight Under Nice Pillows
Yes, I know about the controversy surrounding Pluto. For now, in our Astronomy book Pluto is still hanging in there with the “real” planets. The author has assured me we will eventually address this issue. So don’t worry we’ll let you know when Pluto changes his status at our house.

3 thoughts on “P is for Pluto

  1. Unknown's avatar
    laurele September 15, 2010 at 4:25 am Reply

    Please do not change Pluto's planet status at your house and please encourage the author of your astronomy book not to change it either. Pluto IS still a planet. The IAU decision in 2006 was highly problematic for many reasons. Only four percent of the IAU voted on the controversial demotion, and most are not planetary scientists. Their decision was immediately opposed in a formal petition by hundreds of professional astronomers led by Dr. Alan Stern, Principal Investigator of NASA’s New Horizons mission to Pluto. One reason the IAU definition makes no sense is it says dwarf planets are not planets at all! That is like saying a grizzly bear is not a bear, and it is inconsistent with the use of the term “dwarf” in astronomy, where dwarf stars are still stars, and dwarf galaxies are still galaxies. Also, the IAU definition classifies objects solely by where they are while ignoring what they are. If Earth were in Pluto’s orbit, according to the IAU definition, it would not be a planet either. A definition that takes the same object and makes it a planet in one location and not a planet in another is essentially useless. Pluto is a planet because it is spherical, meaning it is large enough to be pulled into a round shape by its own gravity–a state known as hydrostatic equilibrium and characteristic of planets, not of shapeless asteroids held together by chemical bonds. These reasons are why many astronomers, lay people, and educators are either ignoring the demotion entirely or working to get it overturned.

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  2. Unknown's avatar
    Christy September 16, 2010 at 1:22 am Reply

    Pluto's still a planet in this house too!

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  3. Unknown's avatar
    sarah in the woods September 23, 2010 at 1:51 am Reply

    Oh my goodness! I cannot believe how big Theodore is! Maybe it's the haircut. Rohan turns three in a week. I think he still looks so young – probably because of his abundance of lingering “baby” fat – ha!

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