Our galaxy is surrounded by innumerable mysteries. Space scientists have been busy uncovering these mysteries for centuries.

And one of the big discoveries among them is the solar system where a group of planets including our Earth is maintaining a coherent universe through the force of gravity.

This is a group of planets which has been playing an important role in maintaining our Earth and the life on it.

Through this article, we will try to understand about this in space and gather information about what is the planet in the solar system.

So stay with this article so that you can get all the important information about its structure.

What is planet?

So let’s know first and clarify what planet is. In fact, it is an astronomical object that revolves around a large star with its own certain speed limit and due to the pull of its gravitational field, has acquired a specific and sufficient space with an almost spherical shape

In some issues, there are differing opinions among some astronomers regarding the definition of it. Some astronomers present a different argument on it in some cases, while another group of astronomers adheres to the International Astronomical Union (IAU) definition.

let’s know what IAU said in this regard:

It must revolve around a star, such as our Sun. Gravity causes to assume a nearly round shape, known as hydrostatic equilibrium.

This happens when the force of gravity pulls material towards its center, resulting in a spherical or oblate shape.

They are empowered enough to remove debrises from their orbital path, which means it has enough gravitational influence to dislodge or expel other objects around them.

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Structure of the solar system?

According to their characteristics, they can be categorized into two main types: 1. terrestrial and 2. gas giants.

What are Terrestrial:

The inner most of our solar system, Mercury, Venus, Earth, and Mars, are known as terrestrial. They are primarily composed of rocky material and have solid surfaces. 

They are relatively small in size compared to the gas giants. The are closer to the Sun and have higher temperatures. 

They have thinner atmospheres as compared to the gas giants. Earth and Venus have experienced significant geological activity over their histories, while Mars shows evidence of past geological activity as well.

What are Gas Giants:

Beyond the terrestrial, we have the gas giants in the outer regions of it. Jupiter and the Saturn are considered gas giants, while Uranus and Neptune are referred to as ice giants.  

These are composed mainly of hydrogen and helium, with smaller amounts of other elements.  The gas giants are much larger in size compared to the terrestrial and have strong gravitational forces.  

They are primarily made up of gas and do not have a well-defined solid core like the terrestrial one.

It’ should be noted that the overall structure of the solar system also includes the Sun, a belt of mostly rocky asteroids between Mars and Jupiter known as the asteroid belt, and the Kuiper belt of mostly icy objects beyond the gas giants.

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How they are Organized ?

In the solar system they are organized based on their distance from the Sun. Please note that all they are revolve around the Sun and the distance at which they are from the Sun while rotating is considered to be the basis of the distance.

The order of the planets is described below :-

Mercury:- It is closest to the Sun, and the smallest one among all of them.

Venus:- ThIs is the second one from the Sun, Venus is also often referred to as Earth’s sister due to its similar size and composition.

Earth:- Our home where we live, Earth is situated on the third position from the Sun and are known to support life.

Mars:- The fourth one from the Sun, and is often called the “Red Planet” due to its reddish appearance.

Jupiter:- The largest one in the solar system, Jupiter is a gas giant and sited on fifth position from the Sun. It is more than twice as massive as all the others combined.

Saturn:- The sixth one from the Sun, Saturn is another gas giant known for its prominent ring system.

Uranus:- The seventh one from the Sun, Uranus is an ice giant and is unique among all of them as it rotates on its side.

Neptune:- The eighth and farthest one, Neptune is also an ice giant and is known for its vivid blue color.

Pluto which was once considered the ninth number, is now classified as a dwarf. Additionally there is a region beyond Neptune called the Kuiper belt that contains numerous small icy objects.

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FAQs


Q). Which is the coldest planet ?

A). Neptune is consider one of the coldest in our solar system. While Uranus is colder than Neptune, it is not considered a planet in the traditional sense but rather an ice giant.

Neptune holds the record for the coldest temperature ever measured, with temperatures usually around -214 degrees Celsius. However, Uranus has the lowest recorded planetary temperature in the solar system, reaching a very chilly -224 degrees Celsius.

Q). What is the hottest planet in the solar system?

A). Venus is consider as hottest in our solar system. With a surface temperature of about 465 degrees Celsius (869 degrees Fahrenheit), Venus experiences extreme heat due to its dense atmosphere, which traps heat in a runaway greenhouse effect.

Despite being farther from the Sun than Mercury, Venus is hotter because of its thick atmosphere and high concentration of carbon dioxide.

Q). Which is the nearest planet to the sun?

A). ‘Mercury’ is known to be the closest to the Sun. In the mean of distance, it consider as the first among all the others and is located at an average distance of about 58 million kilometers (36 million miles) or 0.4 astronomical units (AU) from the Sun.

Q). How many planets are there ?

A). There are in total eight in the solar system: 1. Mercury, 2. Venus, 3. Earth, 4. Mars, 5. Jupiter, 6. Saturn, 7. Uranus, and 8.Neptune. Pluto, which was once considered the ninth, is now classified as a dwarf.

Additionally, there are other dwarf planets in the solar system, such as Ceres, Haumea, Makemake, and Eris.

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