I know this is a departure from the usual content here at News. Views. Common Sense. and it?s likely you?ve already heard it, but I couldn?t resist.
News:
It?s official ? Pluto is no longer a traditional planet. During the voting near the end of the 2006 meeting of the International Astronomical Union, a formal definition of planet was adopted ? clearing up years of confusion and leading to Pluto?s demotion.
The object must orbit the sun, have the gravity needed to form into a fairly round shape, and have removed nearby debris from its orbit. With this new definition of planet, a new class have been made official ? the dwarf planet. The definition cites dwarf planets as those which orbit the sun, has the gravity and round shape, but have not cleared their orbits of debris. A dwarf planet also excludes natural satellites, such as moons.
With Pluto?s reclassification, our solar system is left with eight traditional planets ? Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune ? and three of these new dwarf planets ? Pluto, Ceres (previously an asteroid but considered a planet when first discovered), and 2003 UB313 (a Pluto-like body far beyond Pluto?s orbit).
Source: http://en.wikipedia.org/wiki/2006_redefinition_of_planet
Views:
I found it interesting that there had not been a readily agreed upon definition of a planet ? that it really depended on which astronomer you asked ? and the fact that things had been that way for years. I recognize that the elimination of Pluto as a traditional planet will cause some strife, but in time people will adjust.
The new classification of dwarf planet, however, may pose more problems. It is believed that there are dozens of Pluto-like objects beyond Pluto and 2003 UB313, which begs the question: will we have to learn 20 or 30 planets in the future? Then again, that could be kind of fun.
On very much a different note, what does this mean for astrologers and others who depend on the planets for there ?psychic abilities?? My guess it that this will show ? once and for all ? that astrology and horoscopes are (thank goodness) total nonsense and fraud.
Common Sense:
Time to update those textbooks! After more than 80 years of teaching that our solar system consists of nine planets ? Pluto among them ? this change will take a while to get used to. My guess is that there will be resistance to this from some organizations, but it time all will accept.