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Topic: Pluto is no longer a planet! Poor Fwiffo! (Read 13418 times)
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Defender
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This is pure crap. Galileo must be rolling over in his grave. Why the hell do we have to classify everything? We have 9 planets, 10 if an object is truly past Pluto. There is no discussion for me IMO.
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XR4-IT
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The nuts Androsynth
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I am just coping my blog article to here so I don’t have to retype every thing.
The Eight Planets
Over the past week the debate has continued and the astrologers I mean astronomers have determined a new definition of a planet. “(1) A planet1 is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.”
With that Pluto has been stricken from the planet list because it dose not “clear the neighborhood around its orbit” this is because the orbit of Pluto crosses that of Neptune’s. If that is the case why then is Neptune still a planet? It overlaps Pluto’s orbit.
Pluto is still however being called a dwarf planet under the new definition of a dwarf planet.
“(2) A dwarf planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape2, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.”
Apparently these dwarf planets are still not planets; making the list of Sol’s planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and possibly Neptune.
It seems to me that the new decision on what is a planet was made more for history and culture then for science, because you could still find a celestial body that is in orbit around the Sun with mass sufficient to overcome rigid body forces so that it assumes a … nearly round shape and has cleared the neighbourhood around its orbit that is still smaller than Pluto, and must by definition be called a full blown planet. So how is it that we call Pluto a dwarf planet, and this smaller thing a full planet.
I thought that this was an interesting quote form the article I read on the subject.
He had argued that Pluto and similar bodies didn’t deserve planet status, saying that would “take the magic out of the solar system.”
This really just means that it was too hard for the astrologers to figure out our horoscopes with 12 planets to worry about.
Edit ---
After rereading the new definition it struck me that it said a celestial body that is in orbit around the Sun (Sol I’m assuming) instead of a star. This could mean that a object orbiting another star could not then be a planet.
Later-
XR4-IT
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GeomanNL
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I love YaBB 1G - SP1!
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R.I.P.
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Deus Siddis
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"Ca-chink"
(The sound of my respect for modern science dropping down another notch.)
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Arne
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Yak!
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I don't like the 'clears its orbit' citeria at all, but I agree with 8 planets.
How about... "massive enough to potientally have a significant atmosphere" for planets, and "massive enuogh to be round" for planetoids/dwarf planets? Sorta fuzzy, but no more than 'cleaing orbits'.
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Shiver
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Just a bunch of technicalities. I think the dwarf planet thing makes sense seeing as how we've been spotting so many asteroids and ex-moons that could qualify as planets recently.
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Death 999
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We did. You did. Yes we can. No.
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That is the only reason this happened. If Pluto didn't have a lot of friends around, it'd be fine. But at the rate they're finding them, we'd expect to find around 100 pluto-scale objects out in the kuiper belt.
In other words, it wouldn't by MVEMJSUNP, it would be MVEMJSUNPABCDEFGHIJKLMNOP QRSTUVWXYZABCDEFGHIJKLMNOP QRSTUVWXYZ ABCDEFGHIJKLMNOP QRSTUVWXYZ ABCDEFGHIJKLMNOP QRSTUVWXYZ.
(space breaks inserted to preserve sanity)
Got it?
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Cronos
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**puts foot down**
Pluto is a planet, now and forever...
At least to me 
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Draxas
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I think they're just prejudiced against little peo... er, planets.
We'll miss you, Pluto.
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