Archive of March 2010
Friday, March 19, 2010
Thursday, March 18, 2010
Read more… March 18, 2010 @ 09:52 pm | Category: Beer
Wednesday, March 17, 2010
Tuesday, March 16, 2010
Monday, March 15, 2010
Sunday, March 14, 2010
Well, it depends who you ask. From February 18, 1930 until August 24, 2006 the answer was an equivocal "9". But after that, the answer became "8". What? Well, you see, back in 2006 the International Astronomical Union (IAU) General Assembly voted on a number of resolutions including numbers 5A, 5B, 6A and 6B. The passage of these resolutions changed everything by formally defining what is a "planet". So resolution 5A became a deathblow to our dear friend Pluto. To be a "planet" by this definition you now have to meet three criteria:
- It must orbit the sun.
- It must have significant enough mass to become a round(ish) object.
- It must have cleared the neighborhood of it's orbit.
Anyhow, resolution 5B deemed the other 8 planets to now be "classical planets." 6A deemed Pluto a "dwarf planet" and then 6B seems to be Pluto's consolation prize (or should that be constellation? yuk, yuk) by deeming that dwarf planets shall be categorized as "plutonian objects." Gee thanks. 76 years as a planet all gone, just like that.
So what brought this all up in my head again? A couple of weeks ago there was an episode of Nova called The Pluto Files that discusses the whole thing.
And so, if for no other reason than "I learned it that way", Pluto should at the very least be grandfathered in as a planet. It always hase been and always will be a planet in my mind. Nine planets, just as I was always taught. So I'm okay with the IAU's definition as long as my Pluto gets to still be a planet! March 14, 2010 @ 04:06 pm | Category: Brainwork