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2006-08-18 18:30:55 · 16 answers · asked by nadim 1 in Science & Mathematics Astronomy & Space

16 answers

9 planets in our solar system

Pluto is being debated and may lose its planet status because it is so small

2006-08-18 18:39:50 · answer #1 · answered by Anonymous · 0 0

From my perspective, the objects in the solar system can be classifed this way: 1. inner or terrestrial planets; 2. asteroids and meteors; 3. gas giant planets; 4. comets; 5. moons (planet orbiters, in other words); 6. Trans-Neptunian / Kuiper Belt Objects (not including comets). I feel that the only true planets are in groups 1 and 3, so by my reckoning this would make *8* planets. Pluto is much like the other objects in group 6, so I don't feel it counts as a planet. However, traditionally there are 9 planets, so the IAU could choose to bow to tradition. (There is precedent for keeping some traditional naming conventions in other branches of science--see my 2nd source for an example.)
But I am going with 8 planets as my answer.

2006-08-19 03:47:16 · answer #2 · answered by bbwannab 2 · 0 0

The solar system may soon be home to a dozen planets, with three new additions to the club and more to come, if astronomers approve a new definition of a planet.

The proposal before the 26th general assembly of the International Astronomical Union (IAU) in Prague distinguishes between planets and smaller celestial bodies such as comets and asteroids. It leaves Pluto's status as a planet intact, but modified.

The proposed new definition of a planet would result in a 12-planet solar system with eight classical planets; three plutons, a new growing category of Pluto-like objects, including Pluto, 2003 UB313 (dubbed Xena) and Charon; and Ceres, a former asteroid.

Powerful new telescopes that have discovered large objects in the outer regions of the solar system present a challenge to the historically based definition of a planet, which comes from the Greek word meaning wanderer.

"Recent new discoveries have been made of objects in the outer regions of our solar system that have sizes comparable to and larger than Pluto," says IAU president Professor Ron Ekers. "These discoveries have rightfully called into question whether or not they should be considered as new planets."

If the current proposal is passed by the IAU assembly, the solar system would consist of the planets Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto, Charon and 2003 UB313 (a 'real' name to be chosen later).

2006-08-19 01:47:12 · answer #3 · answered by Khuzemav201 2 · 0 0

In a recent meeting of top astrologers, a big debate was held to clerify the definition of term "planet". With the new revised definition to more heavenly bodies qualify as planets, though they had been discovered long before. Henceforth the telly of planets in our solar system has gone up from 9 to 11.

2006-08-19 01:43:19 · answer #4 · answered by zombie 5 · 0 0

Right now, the count is 9.

If they remove Pluto, it will be 8.

If they add 'Xena' it will be 10.

If they add Charon and Ceres it will be 12.

I'm for adding Xena, but not for Charon or Ceres.

Charon circles Pluto and therefore, to me, it's a moon. If Charon is a planet, then so is Luna and several moons of Jupiter and Saturn.

Ceres may be the biggest in the Asteroid belt, but it doesn't even make up the 50% of the mass. It's just a super-large asteroid.

2006-08-19 07:04:44 · answer #5 · answered by SPLATT 7 · 0 0

there are 9 planets in our solar system but recently there is a discovery of 2 new planets, it is called Charon & Xena.

the current 9 planets in our solar systems are:

Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto

2006-08-20 05:59:08 · answer #6 · answered by foongwk140804 7 · 0 0

12 cerescharon and xena plus the 9 regular planets
here is their order on their proximity to the sun:

mercury

venus

earth

mars

ceres

jupiter

saturn

uranus

neptune

pluto

charon

xena ( 2003 ub313)

2006-08-19 01:38:25 · answer #7 · answered by magneto077 2 · 0 0

11 or actually 12 should be the answer, due to the new definition the physicists have came up with in the recent debate.

But i still like it to be 8 :p

2006-08-19 05:41:51 · answer #8 · answered by akacleverboy 1 · 0 0

Depneds on your deffinition of a planet. The jury is still out.

2006-08-22 21:14:41 · answer #9 · answered by kemchan2 4 · 0 0

Today the count is still 9. Wait a bit and see.

2006-08-19 01:37:20 · answer #10 · answered by EPnTX 4 · 0 0

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