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They don't. In our own solar system this is at best only approximately true. Each of the four inner planets is more dense than any of the four outer planets, but comparing the planets in order from the sun outward, the relationship between them goes:
* Merury is more dense than * Venus, which is less dense than * Earth, which is more dense than * Mars, which is more dense than * Jupiter, which is more dense than * Saturn, which is less dense than * Uranus, which is less dense than * Neptune. So, of the possible ways to choose neighboring planets, the inner one is more dense than the outer one in only 4 of 7 cases. Statistically this is no different from what would be expected had they been chosen entirely at random.
It was believed until fairly recently that the inner/outer planet division happened because planets near a star (relatively speaking) would be too hot to retain much gas, so inner planets would be terrestrial (high density) and outer planets would be gas giants (low density). The discovery that "Hot Jupiters" not only exist but seem to be fairly common has cast doubt on previous notions, and it's possible that it will turn out that the way our own solar system is arranged is simply a coincidence.
What else can I help you with?
Which type of planet will have a higher overall density?
A rocky planet will typically have a higher overall density compared to a gaseous planet. This is because rocky planets are composed of heavier elements like iron and silicate minerals, while gaseous planets are primarily made up of lighter elements like hydrogen and helium.
Is there a link between the distance from the sun and the density of planets?
Yes, there is a general trend where planets further from the sun tend to have lower densities compared to planets closer to the sun. This is because closer planets experienced higher temperatures during their formation, leading to the loss of volatile compounds and the retention of denser materials.
Why were planets closer to the sun not able to retain lighter gases?
Planets closer to the sun have higher temperatures, which causes them to have higher escape velocities. Lighter gases are more easily able to escape a planet's gravitational pull at higher temperatures, resulting in these planets being unable to retain them. Additionally, the solar wind from the sun can strip away lighter gases from planets closer to it.
How many planets are closer to the Sun than Jupiter?
The planets closer to the Sun than Jupiter are: Mercury, Venus, Earth, and Mars. So, four planets are closer than Jupiter.
What planets are closer to the sun than earth?
Mercury and Venus are the planets that are closer to the Sun than Earth.
Which type of planet will have a higher overall density?
A rocky planet will typically have a higher overall density compared to a gaseous planet. This is because rocky planets are composed of heavier elements like iron and silicate minerals, while gaseous planets are primarily made up of lighter elements like hydrogen and helium.
Is there a link between the distance from the sun and the density of planets?
Yes, there is a general trend where planets further from the sun tend to have lower densities compared to planets closer to the sun. This is because closer planets experienced higher temperatures during their formation, leading to the loss of volatile compounds and the retention of denser materials.
Why were planets closer to the sun not able to retain lighter gases?
Planets closer to the sun have higher temperatures, which causes them to have higher escape velocities. Lighter gases are more easily able to escape a planet's gravitational pull at higher temperatures, resulting in these planets being unable to retain them. Additionally, the solar wind from the sun can strip away lighter gases from planets closer to it.
Why might the solar wind have a stronger effect on inner planets than on outer planets in the solar system?
The solar wind has a stronger effect on inner planets because they are closer to the Sun and therefore experience higher solar wind densities and stronger solar wind speeds. Outer planets are farther away from the Sun and have weaker solar wind interactions due to the decreased solar wind density and speed at their distance from the Sun.
When two artificial satellite revolve around the earth the one's closer and the one's further. which one revolve the earth with higher speed?
The one that is closer will move at a higher speed. The same happens, for example, with planets revolving around the Sun - the planets closer to the Sun move faster.
Why is the temperature higher in the inner planets than the outer planets?
Planets closer to the sun will receive more of the suns energy per unit of area on their surface than planets further from the sun, so will generally be hotter.
How many planets are closer to the Sun than Jupiter?
The planets closer to the Sun than Jupiter are: Mercury, Venus, Earth, and Mars. So, four planets are closer than Jupiter.
How are the planets closr to the sun different from those that are located farther from the sun?
Planets closer to the sun are typically smaller, rockier, and have higher temperatures due to their proximity to the sun. Planets farther from the sun are generally larger, colder, and composed mostly of gas and ice. Additionally, planets closer to the sun have shorter orbital periods and higher gravitational influences.
What planets are closer to the sun than earth?
Mercury and Venus are the planets that are closer to the Sun than Earth.
What orbit closer to the sun?
Planets Mercury and Venus are closer to the Sun than Earth.
Does the speed of planetary orbits increase the closer the planet is to the sun?
Yes, according to Kepler's laws of planetary motion, planets move faster in their orbits when they are closer to the sun. This is due to the gravitational force exerted by the sun, which causes the planet to accelerate as it gets closer.
Why inner planets are closer to the sun than outer planets?
The inner planets are closer to the sun than the outer planets because of the way the solar system formed. When the solar system was still a swirling disk of gas and dust, the inner planets formed closer to the center where it was hotter, while the outer planets formed in the colder regions farther away. This distribution of planets based on temperature led to the inner planets being closer to the sun than the outer planets.
