Ivan
2006-08-24, 10:39 AM
Link (http://today.reuters.com/news/articlenews.aspx?type=topNews&storyid=2006-08-24T141005Z_01_L24924966_RTRUKOC_0_US-SCIENCE-PLANETS.xml&src=rss)
PRAGUE (Reuters) - Pluto was stripped of its status as a planet on Thursday when scientists from around the world redefined it as a "dwarf planet", leaving just eight classical planets in the solar system.
Discovered in 1930, Pluto has traditionally been considered the ninth planet, and furthest from the sun, in the solar system.
However, the first definition of a planet approved after a heated debate among some 2,500 scientists and astronomers drew a clear distinction between Pluto and the other eight planets.
The need to define what it takes to be a planet stems from technological advances that enable astronomers to look further into space and to measure more precisely the size of celestial bodies in our solar system.
In addition to the categories of "planet" and "dwarf planet", the definition creates a third category to encompass all other objects, except satellites, to be known as small solar system bodies.
Now school teachers are going to have to come up with some other rhyme to help remember the names and order of the planets now that the pizza thing I was taught in school is out of date now. But I bet they won't even bother teaching that it's not the 9th planet anymore.
PRAGUE (Reuters) - Pluto was stripped of its status as a planet on Thursday when scientists from around the world redefined it as a "dwarf planet", leaving just eight classical planets in the solar system.
Discovered in 1930, Pluto has traditionally been considered the ninth planet, and furthest from the sun, in the solar system.
However, the first definition of a planet approved after a heated debate among some 2,500 scientists and astronomers drew a clear distinction between Pluto and the other eight planets.
The need to define what it takes to be a planet stems from technological advances that enable astronomers to look further into space and to measure more precisely the size of celestial bodies in our solar system.
In addition to the categories of "planet" and "dwarf planet", the definition creates a third category to encompass all other objects, except satellites, to be known as small solar system bodies.
Now school teachers are going to have to come up with some other rhyme to help remember the names and order of the planets now that the pizza thing I was taught in school is out of date now. But I bet they won't even bother teaching that it's not the 9th planet anymore.