What do you think about this 53 planets in our solar system?

Question

Charon, Ceres - possibly hundreds more! Was tuff enuff learning 9 planets.

Answer 1

12 planets.The designated dozen would include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. The three newcomers would be Ceres, the largest known asteroid, which orbits between Mars and Jupiter; Charon, which has been considered Pluto's moon; and the recently discovered 2003 UB313, an object nicknamed Xena that was discovered in 2005 orbiting far beyond Pluto in the outer solar system.

Charon was Pluto moon .Now considered a double planet.Why is Pluto-Charon a “double planet” and not a “planet with a satellite”?
Both Pluto and Charon each are large enough (massive enough) to be spherical. Both bodies independently satisfy the definition of “planet”. The reason they are called a “double planet” is that their common centre of gravity is a point that is located in free space outside the surface of Pluto. Because both conditions are met: each body is “planet-like” and each body orbits around a point in free space that is not inside one of them, the system qualifies to be called a “double planet.”

Answer 2

Thats a tricky designation to make, because there is a point where all of these bodies are smaller than not only our own moon... but some of the moons of Jupiter. Jupiter has quite a few "moons" that would certainly qualify as planets if they orbited the sun.

I would first concern ourselves with the major moons of Jupiter and Saturn before much attention is paid to the bodies that lie further out in space. Those are much more interesting, and likely to be of practical value to mankind.


TSDMD

Answer 3

I would love to remember what that little memory thing was to remember the planets. My very excited mother...something like that.

I think that the planet definition should include a size barrier between planet and asteroid. If it's too small for a civilization to occupy...it's not a planet.

What will other civilizations think of us if we believe that we believe we have 50 some planets? Think on more of a universal scale...not just our solar system.
Cheers!

Answer 4

As man's technology become better, we will probably make even more startling discoveries about our universe. I believe that our definition for planet may even change. There are astroids out there that are larger than some planets. Not to mention the countless solar systems that exist. Outer space is incredible and no one alive today will ever be able to sufficiently explain all.

Answer 5

I agree. Nine is enough and to add anymore is stupid and just another way of confusing this even more. Lets stage a sit in at NASA and make signs!

Down with the 53 planets on one sign! Pluto is the end on another! Up Uranus we don't want no more!

Answer 6

IT SUCKS I THINK THAT THEY SHOULDNT GO THRU WITH IT... i disagree completely and also what are the kids gonna learn in elementary all 53 plant all that means is that they are gonna have to come up with a new saying instead of "my very elegent mother just served us nine pizzas"

Answer 7

Actually those are all moons. Even Pluto should be considered as a rock, not a planet.

Answer 8

I just know 9, and I'm happy with knowing just those.....I'll probably try learning the names of the remaining ones after I've visited Pluto!

Answer 9

Just typical science garbage where they try and shake us up every 10 years and end up deciding the original idea was best. I wouldln't worry about it.

Answer 10

Too much for 1st graders to handle.