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What is the Number of Planets in Our Solar System?

What is the Number of Planets in Our Solar System?

Did you know that the solar system contains more than a trillion planets? How many of them do you recognize? Are you familiar with the names of the five most prominent planets? Did you know that there are also a couple of dwarf planets? In this article, you will learn about Pluto, Neptune, and Ceres. You’ll also learn about the names of the smaller planets, such as Eris and Ceres.


The closest approach of Ceres to Earth is 1.6 Astrological Units. The name Ceres was originally intended to honor the ancient roman goddess Cerere, who was the goddess of agriculture. The planet is believed to have originated in Sicily, where the oldest temple of Ceres is located. Ferdinandae was supposed to be in honor of the then king of Sicily. Today, the name Ceres is used for the 33rd largest body in the Solar System.

Scientists have detected evidence of water vapor on Ceres’s surface, which is more water-rich than previously thought. This water vapor may have been produced by the outgassing of the planet’s mantle or cryovolcano. Water vapor on Ceres is common among comets, and it’s possible that Ceres could contain 200 million cubic kilometers of water. That’s more than the entire fresh water supply of Earth.

In 1801, Giuseppe Piazzi discovered Ceres. He assumed that Ceres was missing between Mars and Jupiter. After a few years, he discovered Pallas, Juno, and Vesta, which he named as planets. After another 140 years, the classification was altered to include Ceres. As a result, the number of planets in the Solar System is increasing, which is why Ceres is the number of planets


In 2005, scientists discovered the dwarf planet Eris, and it is the first object from the solar system known to have a moon. The discovery of Eris sparked an uproar in the astronomical world. In Prague, members of the International Astronomical Union voted to demote Pluto and Eris to dwarf planet status. As a result, our solar system now only has eight planets instead of nine.

While many other minor planets may have moons, Eris is the only one that has two moons. One of these is called Dysnomia and it orbits around Eris. This has helped scientists determine Eris’ mass, which is 27% greater than that of Pluto. Eris is one of the most distant objects in the solar system. However, it is still far from Pluto, making it the least frequented one of the dwarf planets.

The surface of Eris is likely made of frozen methane and nitrogen-rich ice. This layer is thought to have formed when the dwarf planet’s atmosphere began to condense as frost. Its surface temperature is believed to be minus 396 degrees Fahrenheit or 238 degrees Celsius. Observations of Eris would be difficult without powerful telescopes and sophisticated technology. There are currently no plans to visit the dwarf planet.


Scientists have found that Pluto has a heart-shaped region. This region has different compositions, as does the other planets in the solar system. The smooth surface of Pluto suggests recent geologic activity. New Horizons spotted evidence of liquid nitrogen, massive glaciers, and volcanoes on Pluto’s surface. Pluto may even have once hosted life on Earth. Scientists have yet to discover the reasons for its unique composition.

Its size is small enough to qualify it as a dwarf planet, but not big enough to have its own orbit. Pluto shares its orbit with objects in the Kuiper belt, which is a group of objects that are not as massive as the Earth. Its distance from the Sun makes it difficult to clear a neighborhood. Thus, Pluto is a dwarf planet. Although Pluto is small, it is still large enough to be considered a planet by the international community.

While Pluto was previously classified as a planet, its new classification is based on classifications that existed before modern discoveries made possible by technological advances. The demotion is a step in the right direction. However, before Pluto’s reclassification, astronomers discovered more objects that were similar to it. The scientists had to decide whether to add these objects to the list or remove Pluto from the list altogether. Because it is so similar to a planet, Cesarsky said that the purpose of promoting Pluto was not to demote it, but to promote other objects called dwarf planets.


Scientists are currently exploring the moons of Neptune, the eighth planet in our solar system. The moon Triton is home to geysers, which spray material five miles into the sky. The planet’s magnetic field is 27 times stronger than Earth’s. But what exactly is Neptune made of? Its atmosphere is made of hydrogen and helium, and it is approximately 20% larger than Earth.

It was first discovered by Galileo Galilei in 1612, but his primitive telescope caused him to mistake it for a star. By 1989, NASA sent Voyager 2 to observe the planet. The probe was able to take images of Neptune, which revealed a mysterious blue-green disc. This region was the Great Dark Spot, and its size was about 13,000 by six thousand kilometers. By 1994, the Great Dark Spot had disappeared. By 2011, the mass of Neptune equaled the mass of 17 Earths. By 2011, Neptune completed its first full orbit around the sun.

Today, scientists have discovered fourteen moons orbiting Neptune. It has eight major satellites, and four minor ones. The moons orbit near Neptune, and they are not visible to the naked eye. The moons orbit around the planet in an irregular orbit. The moons orbit near Neptune’s rings, and its ring system has over a hundred planets. But the moons of Neptune are even more mysterious, as there are many smaller moons orbiting it.


According to the International Astronomical Union, our solar system contains 8 planets, each with its own size and mass. In order of mass, the planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. The sun, planets, moons, asteroids, and comets make up our solar system. If you’re interested in how many planets are in our solar system, check out our Solar System article.

There are eight planets in our solar system, but more than this? Despite the apparent abundance of available space, it is difficult to know how many more there might be. Astronomers call the inner four planets “terrestrial,” which means that their surfaces are rocky and are closer to the sun. This would make our solar system a much larger and more complex place. While we can imagine a larger universe with more planets, a complicated solar system isn’t likely to have many.

Although there are fewer than nine planets, Earth is the only one with a moon. Mercury and Venus don’t have moons, while Jupiter and Saturn have dozens. The Earth’s interior is an intricate structure of superheated rocks. The solid center is surrounded by a layer of liquid, which is known as the atmosphere. Earth’s magnetic field dominates the behavior of electrically charged particles traveling from the Sun.


The fifth largest planet in our solar system, Jupiter is a massive ball of gas, with a thick atmosphere. About 1,300 Earths would fit inside of Jupiter’s atmosphere. The planet has many swirls and spots, and its prevailing winds reach speeds of 335 miles per hour near the equator. This chaotic atmosphere produces the heat that powers the planet. It also generates more heat than it receives from the Sun.

The banded colors of Jupiter are the result of plumes of phosphorus and sulfur-containing gases rising from the warmer interior of the planet. Because of Jupiter’s rapid rotation, its atmosphere is separated into long belts of brighter and darker material, similar to Earth’s jet streams. The deepest layers of Jupiter’s atmosphere may contain diamond rain and its dense core. However, no one can say for sure for certain whether the planet is a moon or not.

Apart from its large surface, Jupiter also has dozens of moons. The most popular among these is Ganymede, which is the largest moon in the solar system. It also has a magnetic field, and the moon Io is one of the most active bodies on the planet. Europa is thought to have a large ocean underneath its icy crust. There may be more moons than we can currently see, though. In 2003, astronomers named 23 new moons orbiting Jupiter. In June 2018, researchers discovered 12 new Jovian moons.


Saturn is one of the largest planets in the solar system and is surrounded by a ring system that consists of billions of water-ice particles and traces of rocky material. The rings appear to be bright, in part because they are relatively large, but are also made up of reflective water-ice particles that reflect sunlight back. As Saturn is so massive, scientists believe that the rings are relatively young and were formed during its formation.

It is the second largest planet in the solar system and is nearly 97% hydrogen and helium. It has a metallic core at the center and is surrounded by a thick layer of liquid metallic hydrogen. This layer gradually transforms to gas. The outermost gas layer of Saturn is nearly 1,000 km thick. This planet does not have a solid surface and would sink through the outermost layer if humans tried to walk on it. Its surface is largely made of swirling gases.

The distance between Saturn and the sun is approximately 886 million miles. It is 1.4 billion kilometers from the sun and experiences frigid temperatures in its upper atmosphere, where temperatures can dip to minus 292 degrees Fahrenheit. The ring system on Saturn is the most spectacular sight in the solar system. Small telescopes are capable of viewing the rings of Saturn. If you are lucky enough to see a clear night sky, you may even be able to see the ring system.