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The theory is the sun burned away matter from the inner planets, which is why these four are small rocky worlds. Mercury is very small but dense. Venus is almost as big as earth. Then comes earth, and Mars is quite a bit smaller than earth. Next is Jupiter, the first and king of the gas giants. Jupiter is more massive than all the other planets combined, over 300 times the mass of earth. Saturn is the next largest planet, followed by Neptune and Uranus.

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What are the differences between the outer planets?

The outer planets (Jupiter, Saturn, Uranus, Neptune) are larger and mostly composed of gas, while the inner planets are smaller and rocky. The outer planets are also much colder, have more moons, and are located farther from the Sun compared to the inner planets. Additionally, the outer planets have ring systems, while the inner planets do not.


How the sizes of the inner planets compare to the sizes of the gas giant planets?

The inner planets (Mercury, Venus, Earth, Mars) are smaller in size compared to the gas giant planets (Jupiter, Saturn, Uranus, Neptune). The gas giants are much larger because they are primarily composed of gas and have thick atmospheres, while the inner planets are rocky and have thinner atmospheres. Jupiter is the largest planet in our solar system.


What are the Inner Planets also known as?

The Inner Planets are also known as the terrestrial planets or rocky planets. They include Mercury, Venus, Earth, and Mars, and are characterized by their solid surfaces and relatively small sizes compared to the outer gas giants.


How do the inner and outer planets atmosphere different?

the outer planets are gaseous and the inner planets are not


How do the sizes of the inner planets compare to the sizes of the gas giant planet?

The inner planets (Mercury, Venus, Earth, Mars) are much smaller in size compared to the gas giant planets (Jupiter, Saturn, Uranus, Neptune). Gas giants are significantly larger in size because they are primarily made up of gases and have thick atmospheres, whereas the inner planets have rocky surfaces and smaller overall volumes.

Related Questions

What is different about the inner planets?

they are all different sizes


Are the planets different sizes and shapes?

No, they are the size of uranus ;)


Are asteroids mostly round like planets or are they all different shapes?

Asteroids are all different shapes and sizes.


How do the sizes of the inner planets compare to the sizes of the gas giant planets?

inner planets are small and outer planets are big and cold and gas giants.


Do planets and moons come in all sizes and colors?

Yes. Planets and moons come in all sizes and colors.


How are planets different?

There are many ways the planets are different. One way is that they all have different gravity levels, they are all different shapes and sizes. Lastly that they are different temperature, and different material.


What are the differences between the outer planets?

The outer planets (Jupiter, Saturn, Uranus, Neptune) are larger and mostly composed of gas, while the inner planets are smaller and rocky. The outer planets are also much colder, have more moons, and are located farther from the Sun compared to the inner planets. Additionally, the outer planets have ring systems, while the inner planets do not.


Why do planets have different day lenghts?

Planets have different day lengths due to variations in their rotation speeds and sizes. Planets closer to the Sun, like Mercury, have shorter day lengths because they rotate faster. Larger planets, such as Jupiter, have longer day lengths due to their slower rotation speeds.


How do the sizes of the four inner planets compare?

they are small


What do astronomers use to measure planets?

Planets' sizes are measured from their angular width as seen from the Earth. The basic scale of distances is calibrated by measurements of Venus from different points on Earth at the time of a transit of Venus.


How big is each planet or what they are made of?

Planets are different sizes and they are made of different things. The planets mainly fall into 2 different types - some are made mostly of gas (Saturn, Jupiter, Uranus and Neptune) and some are made mostly of rock (Mercury, Venus, Earth, Mars).


What is the size of the outer planets?

The average sizes of the outer planets are smallest than the average size of the Pluto so that they can called them the dwarf planets.