Pluto - no more a planet
Source: Astronomers say Pluto is not a planet
It's interesting, bunch of world's renowned astronauts got together and they drew new grades to define what a planet is and what is not.
A celestial body that is in orbit around the sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a ... nearly round shape, and has cleared the neighborhood around its orbit.
Pluto is automatically disqualified because its oblong orbit overlaps with Neptune's.
According to this new rule Pluto joins the list of dwarf planets with the former asteroid Ceres and 2003 UB313.
So much for learning hard to remember the names of the nine planets in school.
later...
2 Comments:
this is really interesting.. now we are left with 8 planets..
It is actually good for the kids of the coming generations. They have to memorize only 8 planets now!!!
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