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Pluto is the only "planet" that isn't a planet. Well I think that the IAU still have not answered the question WHAT MAKES A PLANET A PLANET? Is it a certain size or something?
Comment : The IAU have defined a planet. The definition is mainly about size, but it's not simple:
1) The object must be big enough for gravity to have formed it into a (roughly) spherical shape.
2) The object must be by far the largest object in the neighbourhood of its orbit.
Pluto qualifies on 1) but fails on 2).
Also, Venus and Mercury are sometimes called "morning stars" or "evening stars", but they are planets.
What else can I help you with?
What are 3 planets that are relatively large gaseous and low density?
A gas giant (sometimes also known as a Jovian planet after the planet Jupiter, or giant planet) is a large planet that is not primarily composed of solid matter. There are four gas giants in the Solar System: Jupiter, Saturn, Uranus, and Neptune.
Which planet is a planet of rocks and ice?
The planet is Pluto, but Pluto is not a planet anymore so no planet has rock and ice in the middle.
An object that orbits a star and does not produce its own light is called?
Depending on size, and some other factors, that can be a planet, a dwarf planet, an asteroid, or a meteor. Depending how you look at it, you might or might not include moons (they orbit a planet, and together, planet and moons orbit the star).
What planet Farthest planet from the sun?
Depends whether you include Pluto as a planet or not (I think it isn't at the moment - but it does seem to swap back and forth!). So, if you include Pluto, then it's Pluto. If you include all the dwarf planets (of which Pluto is one) - then its Eris. Otherwise, it's Neptune
When will Seth go to his home planet?
Seth will go to his home planet on January 30, 2010
Is Saturn a jovian planet?
Yes, it is a Jovian planet.
What jovian planet orbits closest to the sun?
The closest Jovian planet, aka gas giant, is Jupiter. Jovian means relating to Jupiter.
Why isn't Jupiter classified as either a terrestrial planet or a jovian planet?
Jupiter is a Jovian planet. The word "Jovian" comes from "Jove," which is another name for Jupiter.
What planet of the jovian planets does not have rings?
Uranus is the planet out of the Jovian planets that does not have rings.
What kind of planet is Pluto considered a Jovian or a terrestrial?
jovian
What jovian planet is closest to the sun?
Jupiter is the Jovian planet that is closest to the sun...
Is Uranus a terrestrial or Jovian planet?
it is a Jovian planet. Jupiter, Saturn, Uranus, and Neptune are all Jovian, while Mercury, Venus, Earth, and Mars are terrestrial planets.
Is venus jovian or terrestrial?
Venus is a terrestrial planet, not a jovian planet. Terrestrial planets are rocky and have solid surfaces, while jovian planets are gas giants.
What is the name of the largest Jovian planet?
Jupiter is both the largest Jovian or "inner" planet, and the largest planet in our entire solar system.
What word means of or relating to the planet Jupiter?
The word that means of or relating to the planet Jupiter is "Jovian."
What planet cannot be classified as either a Terrestrial or a Jovian planet?
Mercury is a planet that cannot be strictly classified as either a terrestrial or a jovian planet. It is a terrestrial planet due to its rocky composition, but it also exhibits characteristics of a jovian planet, such as a lack of atmosphere and presence of a weak magnetic field.
Is Mercury a Terrestrial Planet or a Jovian planet?
The Jovian planets are Jupiter, Saturn, Uranus, and Neptune. They share many characteristics including their location outside of the asteroid belt (between the orbits of Mars and Jupiter).
