Exploring the Enigmatic Eight: A comprehensive study of Planets in our solar system

Since the beginning people on planet Earth were curious about knowing the hidden secrets of other planets on which they live and other planets of the solar system. Their common questions were what other planets are made of? Do they have water and an atmosphere? Can humans live there? So, I will try to give a comprehensive view of all planets of the solar system and answers to commonly asked questions.

           Let’s discuss first what is a planet. Planets are celestial bodies that orbit around a star, such as our Sun. They are large enough to have a nearly spherical shape due to their own gravity. They are classified into 2 main types Terrestrial planets and gas giants. Terrestrial planets are small, rocky planets like Earth. They have solid surfaces and are composed of mostly silicate rocks and metals. Gas giants are large planets made up mostly of gases, such as hydrogen and helium, along with other volatile compounds. Gas giants lack a solid surface and have thick atmospheres.

According to the definition established by the International Astronomical Union (IAU) in 2006, a celestial object must meet the following three conditions to be classified as a planet:

Ø It orbits the Sun (or another star).

Ø It is spherical in shape.

Ø It has cleared its orbit.

Pluto does not satisfy the 3rd point so that’s why it has been removed from the list of planets and considered as a draft planet because of its low gravity it cannot clear its orbit.

There are a total of 8 planets in our solar system they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Their details are given below.

           Let’s discuss the first planet and the closest to the solar system Mercury. Mercury is the smallest planet in the solar system. It lies in the category of Terrestrial planets it has a solid surface. Mercury has a very thin atmosphere made of hydrogen and helium, and it does not have a moon. The temperature at Mercury is very old ranging from -173 Celsius at night to 430 Celsius during the day. Mercury’s surface is covered with impact craters just like the moon. Mercury takes 88 days to complete its one revolution around Sun. While it takes 59 days to complete one spin around its axis. Mercury’s average orbital speed is 48 kilometers per second. The diameter of mercury is 4,879 km. The distance of mercury from the sun is approximately 48 Million km. The core of Mercury is primarily composed of iron. It is estimated to make up about 42% of the planet's volume. The iron core of Mercury is believed to be surrounded by a molten outer core. So here many people raise the question that as the inner core has more temperature than the outer core then why it’s in a solid state and the outer core is in a molten state? The answer is due to pressure. As the inner core has more pressure than the outer core so this pressure exerts more force on atoms of the inner core that tightens the atom and maintains the state of solid because pressure is low at the outer core so its present in a molten state. Mercury also has a magnetic field when the planet moves then the ions present in the molten iron move and generates current this is also called the dynamo effect that’s why it has also a magnetic field.  As mercury is very close to Sun so because of high temperature water is not present on its surface. But it is thought that Mercury may have water ice at its north and south poles inside deep craters, but only in regions in permanent shadows. In those shadows, it could be cold enough to preserve water ice despite the high temperatures on sunlit parts of the planet. Mercury, the closest planet to the Sun in our solar system, does have a tilt on its axis. The axial tilt of Mercury is only about 0.034 degrees. Mercury rotates counter-clockwise on its axis.  The value of g on mercury is 3.7 m/s^2. There are several missions sent by humanity to explore mercury some are discussed here :

Ø Mariner 10 (1974-1975): Mariner 10 was the first mission to visit Mercury. It conducted three flybys of the planet, providing the first close-up images and data of Mercury's surface and atmosphere.

Ø MESSENGER (Mercury Surface, Space Environment, Geochemistry, and Ranging) (2004-2015): MESSENGER was a NASA spacecraft that orbited Mercury from 2011 to 2015. It provided detailed measurements and observations of Mercury's surface, magnetic field, interior structure, and exosphere. MESSENGER significantly expanded our knowledge of the planet.

Ø BepiColombo (2018-present): BepiColombo is a joint mission by the European Space Agency (ESA) and the Japan Aerospace Exploration Agency (JAXA). It launched in 2018 and is expected to reach Mercury in 2025. BepiColombo consists of two orbiters, the Mercury Planetary Orbiter (MPO) and the Mercury Magnetospheric Orbiter (MMO). The mission aims to further study Mercury's surface.

Now let’s discuss the second closest planet to the sun Venus. It lies in the category of Terrestrial planets it has a solid surface. Its size is actually very similar to the size of Earth. Venus has a thick and dense atmosphere composed mainly of carbon dioxide (about 96.5%) with traces of nitrogen, sulfur dioxide, and other gases. The atmosphere of Venus creates a strong greenhouse effect, resulting in extreme surface temperatures and a hostile environment. The atmospheric pressure on Venus is about 92 times greater than Earth's atmospheric pressure at sea level. Venus does not have a moon. The surface temperature of Venus is around 460 degrees Celsius. Which is higher than the planet Mercury. The reason is because of the dense atmosphere of Venus it traps heat and does not let it out. The surface of Venus is also very mountainous, with the highest mountain being Maxwell Montes, which is about 11 kilometers (7 miles) high. There are also many volcanoes on Venus, some of which are still active. The surface of Venus is also very dry, with no liquid water on the surface. The only water on Venus is thought to be in the atmosphere, in the form of water vapor. Venus takes 225 Earth days to complete one revolution around the Sun. Venus takes 243.025 Earth days to complete a spin around its axis. This is the longest day of any planet in our solar system. The reason why Venus rotates so slowly is not entirely understood. However, scientists believe that it may be due to the planet's thick atmosphere. The atmosphere is so thick that it creates a lot of drag, which slows down the planet's rotation. The orbital speed of Venus is 35 km per second. The diameter of Venus is 12,100 km. The distance of Venus from the Sun is 108.42 Million km. The core of Venus is made up of mostly iron, with some nickel and sulfur. The core is thought to be about 3,000 kilometers (1,900 miles) in radius, and it makes up about 30% of the planet's mass. The core of Venus is thought to be solid, but it may have a molten outer layer. Again, the inner core is in a solid state because of high pressure.  Venus does not have a strong, intrinsic magnetic field. Instead, Venus has an induced magnetic field that is created by the interaction of the Sun's magnetic field and the planet's ionosphere. The ionosphere is the uppermost layer of the atmosphere, and it is filled with electrically charged particles. So, due to the magnetic field of the sun, the charged particles in the ionosphere move, and an electric current is generated so it creates a magnetic field around the planet. The dynamo effect does not occur on Venus because of its too-slow motion. Venus has the most extreme axial tilt in the solar system. Its axial tilt is 177.3°, which means that it is almost completely upside down. Venus rotates on its axis clockwise. The value of g on Venus is 8.87 m/s^2. There are several missions sent by humanity to explore mercury some are discussed here :

Ø Venera Program (Soviet Union): The Venera program was a series of missions launched by the Soviet Union between 1961 and 1984. These missions included a total of 16 spacecraft, with the goal of studying Venus' atmosphere, surface, and environment. The Venera probes provided the first-ever close-up images and data from the surface of Venus.

Ø Mariner 2 (USA): Mariner 2, launched by NASA in 1962, was the first successful interplanetary mission, and its primary target was Venus. It conducted flyby measurements, studying the planet's atmosphere and gathering data on its temperature and composition.

Ø Pioneer Venus (USA): The Pioneer Venus mission, launched by NASA in 1978, consisted of two main components: the Pioneer Venus Orbiter and the Pioneer Venus Multiprobe. The orbiter conducted comprehensive observations of Venus' atmosphere, while the multiprobe deployed four small probes that descended into the atmosphere to collect data on its composition and structure.

Ø Venus Express (European Space Agency): Venus Express, launched by the European Space Agency (ESA) in 2005, was an orbiter mission dedicated to studying Venus' atmosphere and plasma environment. It provided valuable insights into the planet's atmospheric dynamics, composition, and interactions with the solar wind.

Now let’s discuss the third closed planet to Sun the Earth our homeland also called the Water planet. It lies in the category of Terrestrial planets it has a solid surface. The atmosphere of Earth is the layer of gases that surrounds our planet. It is held in place by Earth's gravity. The atmosphere is made up of about 78% nitrogen, 21% oxygen, and 1% other gases, such as argon, carbon dioxide, and water vapor. The atmosphere plays an important role in life on Earth. It provides us with air to breathe, protects us from harmful radiation from the Sun, and helps to regulate the Earth's temperature. The atmosphere is divided into 5 layers troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Earth has one moon. The distance from Earth to the moon is 3,84,000 km. The average surface temperature of Earth is 14 degrees Celsius, and it varies by location and day and night. The surface of the earth is complex. It contains mountains, water, valleys, ice sheets, plains, volcanoes, forests, and deserts. Water is present, nearly 71% and land 29% of Earth’s surface. Earth takes 365 days to complete one revolution around Sun. Earth takes 24 hours to complete one rotation around its axis. The orbital speed of Earth is 29 kilometers per second. The Earth’s diameter is 12,700 kilometers. The average distance between Sun and Earth is 149.6 Million Kilometers. The core of the Earth is the innermost layer of Earth. It is made up of two parts: the inner core and the outer core. The inner core is a solid ball of iron and nickel. It is about 1,220 kilometers (760 miles) in radius and has a temperature of about 5,700 degrees Celsius (9,800 degrees Fahrenheit). The inner core is thought to be solid because of the intense pressure at its depth. The outer core is a liquid layer of iron and nickel. It is about 2,200 kilometers (1,367 miles) in radius and has a temperature of about 4,500 degrees Celsius (8,132 degrees Fahrenheit). The outer core is liquid because of its lower pressure than the inner core. The core is thought to be responsible for the Earth's magnetic field. The Earth's magnetic field is generated by the motion of the liquid iron in the outer core. The motion of the liquid iron creates an electric current, which in turn creates a magnetic field. This process is known as the dynamo effect. The tilt of the Earth is about 23.5 degrees. The Earth rotates counterclockwise. The value of g on Earth is 9.8 m/s^2.  Here are some missions that are currently studying Earth:

Ø Terra is a Nasa Earth observation satellite that has been in orbit since 1999. Terra carries 5 instruments that monitor Earth’s atmosphere, oceans, and lands.

Ø Aqua is another Earth observation satellite that has been in orbit since 2002. Aqua carries 6 instruments that monitor the Earth’s water cycle.

Now let’s discuss the fourth closed planet to Sun the Mars, also called the red planet. It lies in the category of Terrestrial planets it has a solid surface. The atmosphere of Mars is very thin, about 100 times thinner than Earth's atmosphere. This means that the pressure at the surface of Mars is only about 0.088 psi, which is about one percent of the pressure at sea level on Earth. The main components of the atmosphere of Mars are carbon dioxide (95%), nitrogen (2.8%), argon (1.6%), and oxygen (0.13%). There are also trace amounts of other gases, such as water vapor, methane, and carbon monoxide. The atmosphere of Mars is also very dusty, with dust particles that can be as small as 1 micrometer in size. The dust is thought to come from the surface of Mars, where it is constantly being stirred up by the wind. The surface of Mars is very different from the surface of Earth. The surface of Mars is covered in craters, mountains, valleys, and deserts. There is also evidence that Mars once had liquid water on its surface. This evidence includes the presence of sedimentary rocks, which are rocks that are formed from sediments that have been deposited by water. There are also gullies and channels on Mars that appear to have been carved by flowing water. There are a few theories about why the water on Mars vanished. One theory is that water was lost to space. The atmosphere of Mars is very thin, and gravity is also relatively weak. This means that it is easy for water molecules to escape from the atmosphere and into space. The surface temperature on Mars can vary greatly depending on the location and time of year. The average surface temperature on Mars is about -63°C (-81°F). Mars takes 687 Earth days to complete one revolution around Earth. Mars takes 24.6 hours to rotate around its axis. The orbital speed of Mars is about 24 kilometers per second.           The diameter of Mars is 6779 kilometers. The average distance of Mars from the Sun is 228 million km. The core of Mars is a dense, metallic sphere that makes up about 17% of the planet's mass. It is thought to be composed of iron, nickel, and sulfur. The inner core is made of a solid and the outer core is made of liquid. The core of Mars is important for the planet's magnetic field. The magnetic field is generated by the motion of the liquid iron in the outer core. However, this magnetic field is much weaker than that of Earth’s magnetic field. There are many reasons for this one reason is as Mars’s core is cooler than that of Earth’s core so molten iron doesn’t move much and so current is not strongly generated. Another reason is the size of the molten core also affects the strength of the magnetic field the larger the core the more molten iron is available to generate current so Mars’s molten core is smaller in size as compared to that of Earth. Mars’s axis of rotation is tilted by about 25 degrees. Mars rotates counterclockwise around its axis. The value of g on Mars is 3.7 m/s^2. Missions send by humanity to explore Mars are below:    

Ø Viking program (NASA, 1975): The Viking 1 and Viking 2 missions were the first successful landers on Mars. They consisted of an orbiter and a lander, and their primary objectives were to search for evidence of life and to study the Martian environment.

Ø  Mars Pathfinder (NASA, 1997): The Mars Pathfinder mission successfully landed a robotic rover called Sojourner on Mars. It was the first rover to explore the Martian surface and provided valuable data about the planet's geology and climate.

Ø  Mars Exploration Rovers (NASA, 2003): The twin rovers, Spirit and Opportunity, were sent to Mars as part of the Mars Exploration Rover mission. They were designed to study geology and search for signs of past water activity on the Martian surface.

Now let’s discuss the fifth planet to Sun the Jupiter. It is the biggest planet in our solar system.  It is a gas giant planet. Jupiter has nearly 95 moons like Europa etc. Jupiter's atmosphere is the largest planetary atmosphere in the Solar System. It is mostly made of molecular hydrogen and helium in roughly solar proportions; other chemical compounds are present only in small amounts and include methane, ammonia, hydrogen sulfide, and water. When we view its image it appears brown in color because of ammonia and other gases. Although water is thought to reside deep in the atmosphere, its directly measured concentration is very low. Jupiter does not have a solid surface in the way that Earth does. Instead, it is a gas giant. The pressure and temperature at the center of Jupiter are so great that hydrogen is compressed into a liquid metallic state. The average temperature on the surface of Jupiter is -145 degrees Celsius. Jupiter takes about 11.8 years to complete one revolution around Sun. Jupiter takes about 10 hours to complete about one rotation around its axis. Its orbital speed is about 13 Kilometers per second. The diameter of Jupiter is about 142,900 km. The average distance between Sun and Jupiter is 778 Million km. Jupiter has a system of rings, but they are much fainter than the rings of Saturn. The rings of Jupiter were discovered in 1979 by the Voyager 1 spacecraft. The rings of Jupiter are composed of small dust particles, and they are very thin.  The core of Jupiter is a very hot and dense region that is thought to be made up of mostly rock, metal, and hydrogen. The core is surrounded by a layer of liquid metallic hydrogen, and then an outer layer of gaseous hydrogen and helium. Jupiter's magnetic field is the largest and most powerful magnetic field in the Solar System. It is about 20,000 times stronger than Earth's magnetic field. The magnetic field of Jupiter is generated by the motion of the liquid metallic hydrogen in Jupiter's interior. There are many reasons why the magnetic field is much stronger than Earth’s one is because the spinning speed of Jupiter is much greater and also because of the large size of Jupiter’s outer molten core more size more liquid moves and a stronger current is generated. The rotation of the planet causes the liquid hydrogen to move, and this movement generates an electric current. The electric current then creates the magnetic field. The tilt of Jupiter is only about 3 degrees. Jupiter rotates counterclockwise around its axis. The value of g is 24.7 m/s^2.  Here are the missions sent by humanity to explore Jupiter: 

Ø Pioneer 10 and 11 (NASA, 1972 and 1973): Although not specifically sent to explore Jupiter, the Pioneer 10 and 11 spacecraft flew by Jupiter and provided valuable data about the planet. They captured close-up images, measured radiation levels, and studied Jupiter's magnetic field.

Ø  Voyager 1 and 2 (NASA, 1977): The Voyager missions were designed to explore the outer planets of our solar system, including Jupiter. Voyager 1 flew by Jupiter in 1979, followed by Voyager 2 in 1979. These missions provided detailed images and scientific observations of Jupiter and its moons, revealing new insights into its atmosphere, weather patterns, and magnetic field. 

Ø Juno (NASA, 2011): The Juno mission was launched in 2011 and entered orbit around Jupiter in 2016. It is currently in operation and continues to study Jupiter's atmosphere, magnetic field, and interior structure. Juno's primary goals include understanding the planet's origin, its deep structure, and the dynamics of its atmosphere.  

Now let’s discuss the planet next to Jupiter Saturn. Also, one of the most beautiful planets in the Solar System. It’s the 2nd largest planet of solar System. Saturn's atmosphere is made up mostly of hydrogen (H2) and helium (He), with traces of other substances like methane and water, ice. The atmosphere is very thick, with a pressure at the surface that is about 1,400 times the pressure at Earth's surface. The atmosphere is divided into several layers. The atmosphere is divided into several layers, with the lowest layer being the troposphere. The troposphere is where most of the clouds and weather activity on Saturn occur. The clouds are made up of water droplets and ammonia crystals. The winds in the troposphere can reach speeds of up to 1,600 miles per hour (2,575 kilometers per hour). The average surface temperature of Saturn is -185 degrees Celsius. As it is a gas giant it does not have a solid surface like Earth. If in Saturn you try to land on the surface you will not you will continue to move deeper and deeper. The atmospheric pressure is higher than Earth because of much high concentration of gases as compared to Earth. Up till now, Saturn has 145. The famous moon and most under research is Titan etc. It takes Saturn 29.4 years to complete one revolution around Sun. Saturn completes one rotation around its axis in 10 hours. The orbital speed of Saturn is 9.69 kilometers per second. The diameter of Saturn is 120,000 km. The distance from Sun to Saturn is 1.4 Billion km. Like other planets, The core of Saturn is a dense region of rock and ice at the center of the planet. It is surrounded by a layer of metallic hydrogen, an intermediate layer of liquid hydrogen, and liquid helium. The core of Saturn is thought to be responsible for the planet's magnetic field. The movement of the liquid metallic hydrogen in the core generates an electric current, which in turn creates the magnetic field. Saturn's tilt is 26.73 degrees at its axis.  The rings of Saturn are one of the most spectacular features of our solar system. They are made up of countless small particles, ranging in size from micrometers to meters, that orbit around Saturn. The ring particles are made almost entirely of water ice, with a trace component of rocky material. Saturn rotates counterclockwise direction. The value of g on Saturn is 10.9 m/s^2. Here are some missions that are sent by humanity to explore Saturn:

Ø Pioneer 11 (1979): Although not specifically a mission to explore Saturn, Pioneer 11 flew by Saturn and provided valuable data about the planet and its rings.

Ø Voyager 1 and Voyager 2 (1980-1981): The Voyager spacecraft were designed to explore the outer planets of our solar system. Voyager 1 made a close flyby of Saturn, while Voyager 2 performed a more detailed study of the planet and its moons. The Voyager missions provided stunning images and important scientific data about Saturn's atmosphere, rings, and moons. 

Ø Cassini-Huygens (2004-2017): The Cassini spacecraft, a joint mission by NASA, the European Space Agency (ESA), and the Italian Space Agency (ASI), was specifically dedicated to studying Saturn and its moons. Cassini orbited Saturn for over 13 years, providing unprecedented details about the planet, its rings, and its moons. The mission also included the Huygens probe, which successfully landed on Saturn's largest moon, Titan, and transmitted valuable data about its atmosphere and surface.

Now let’s discuss the planet next to Saturn, Uranus. It is also a gas giant and does not have a solid surface like Earth. If you will try to land on Uranus you will not but you will continue to move deeper and deeper. It is the 7th planet of the solar system and the 3rd largest planet in the solar system. The atmosphere of Uranus is composed primarily of hydrogen and helium, with traces of other substances like methane and water. The atmosphere is very thick, with a pressure at the surface that is about 100 times the pressure at Earth's surface. The atmosphere is divided into several layers. The pressure is greater than Earth because of the much higher concentration of gases. The methane in Uranus' atmosphere gives it a distinctive blue-green color. The methane absorbs red light from the Sun, which is why Uranus appears blue. The atmosphere of Uranus is very dynamic. There are strong winds, storms, and waves. The winds can reach speeds of up to 560 miles per hour (900 kilometers per hour). The storms can be very large, and they can last for months or even years. The atmosphere of Uranus is also very cold. The average surface temperature is -224 degrees Celsius (-371 degrees Fahrenheit). This makes Uranus the coldest planet in the Solar System. Uranus has 27 known moons while the famous one is Miranda etc. Uranus takes 84 Earth years to complete one revolution around Sun. It takes about 17 hours to rotate around its axis. The orbital speed of Uranus is about 6.7 km per second. Its diameter is 51,000 km. The distance of Uranus from Sun is 2.9 Billion km. The core of Uranus is thought to be a small, dense region of rock and ice. It is thought to make up about 20% of the planet's mass and about 5% of its radius. The temperature of the core is thought to be around 5,000 Kelvin (9,032 degrees Fahrenheit). The core of Uranus is thought to be surrounded by a mantle of hot, dense fluid. The mantle is thought to make up about 80% of the planet's mass and about 95% of its radius. The mantle is thought to be composed of water, methane, and ammonia ice. So, this fluid is responsible for the generation of Magnetic field around the planet also discussed earlier.  Uranus has two sets of rings. The inner system of nine rings consists mostly of narrow, dark grey rings. There are two outer rings: the innermost one is reddish like dusty rings elsewhere in the solar system, and the outer ring is blue like Saturn's E ring. Uranus has the largest tilt of any planet in the Solar System, with an axial tilt of 97.77 degrees. Value of g in Uranus is 8.87 m/s^2. Here is the missions sent by humanity to explore Uranus:

Ø Voyager 2 (1986): The Voyager 2 spacecraft, launched in 1977, was the only mission to date that has flown by Uranus. In January 1986, Voyager 2 conducted a close flyby of the planet, providing valuable data about its atmosphere, magnetic field, and moons. The mission revealed new information about Uranus' unique tilted axis, its faint ring system, and its diverse moon system. 

Ø Uranus Pathfinder (Proposed): Uranus Pathfinder is a mission concept proposed by scientists at NASA. The mission aims to send an orbiter to Uranus, equipped with instruments to study the planet's atmosphere, magnetic field, rings, and moons in detail. The spacecraft would spend several years orbiting Uranus and conducting comprehensive observations.

Now let’s discuss the last planet, Neptune. It is the 4th largest planet in the Solar System. It is also a gas giant and does not have a solid surface like Earth. If you try to land on Neptune you cannot but eventually you will move deeper and deeper into it. The atmosphere of Neptune is composed primarily of hydrogen and helium, with traces of other substances like methane and water. The atmosphere is very thick, with a pressure at the surface that is about 100 times the pressure at Earth's surface. The atmosphere is divided into several layers. The outermost layer of the atmosphere is the troposphere. The troposphere is where most of the weather on Neptune occurs. The winds in the troposphere can reach speeds of up to 2,100 miles per hour (3,400 kilometers per hour). The temperature in the troposphere decreases as you go higher up. The next layer of the atmosphere is the stratosphere. The stratosphere is much colder than the troposphere. The temperature in the stratosphere can drop as low as -230 degrees Celsius (-382 degrees Fahrenheit). The stratosphere is also where most of the ozone on Neptune is found, and there are other layers as well. The average surface temperature of Neptune is 230 degrees Celsius. Neptune has 14 known moons. The largest moon of Neptune is Triton. It takes around 164 Earth years to complete one revolution around Sun. Neptune takes about 16 hours to complete one rotation around its axis. The orbital speed of Neptune is 5.4 km per second. The diameter is 49,500 km. the distance of Neptune from Sun is 4.4 Billion km. The core of Neptune is a small, dense region at the center of the planet. It is thought to be about the size of Earth and to have a mass of about 1.2 times the mass of Earth. The core is made up of iron, nickel, and silicates. The core of Neptune is thought to be surrounded by a mantle, which is a layer of hot, dense fluid. The mantle is made up of water, ammonia, and methane. This fluid is responsible for the generation of magnetic field that is discussed earlier. Neptune has five distinct rings named, in order of increasing distance from the planet, Galle, Le Verrier, Lassell, Arago and Adams. In addition to these well-defined rings. Three of the Neptunian rings are narrow, with widths of about 100 km or less; in contrast, the Galle and Lassell rings are broad—their widths are between 2,000 and 5,000 km. The Adams ring consists of five bright arcs embedded in a fainter continuous ring. The rings of Neptune are made of extremely dark material, likely organic compounds processed by radiation, similar to those found in the rings of Uranus. The tilt of Neptune's axis is 28.32 degrees. Value of g in Neptune is about 11.1 m/s^2. Here are the mission sent by humanity to explore Neptune:

Ø Voyager 2 (1989): The Voyager 2 spacecraft, launched in 1977, conducted a flyby of Neptune in August 1989. Although Voyager 2's primary mission was to study the outer planets, its encounter with Neptune provided valuable insights into the planet's atmosphere, magnetic field, rings, and moons. The mission discovered new features such as Neptune's Great Dark Spot, and it captured stunning images of the planet and its moon Triton.

So this was all about the 8 planets of Solar System. I hope you enjoyed a lot.