Recently, NASA and other space agencies have published that they have found life possibilities on Ceres Dwarf Planet! Scientists sometimes found life possibilities on such celestial bodies, which are neither planets nor moons of any planet, but they found them habitable for humans and predicted that life already exists. In 2006, the International Astronomical Union removed Pluto from the list of planets in our solar system, as it is located at the end of our solar system, which is the Kuiper belt, from the category of a planet and placed it in the category of a dwarf planet. After which, the total number of dwarf planets in our solar system increased to five.
Apart from Pluto, the dwarf planets present in our solar system are Eris, Haumea, Makemake, and Ceres. Of these, Pluto, Eris, Haumea, and Makemake—four dwarf planets—are present in the Kuiper belt disc at the extreme end of our solar system. But the same dwarf planet Ceres is the smallest among them and is present in the asteroid belt between the planets Mars and Jupiter at the inner end of our solar system. According to scientists, this is a very unique and strange dwarf planet where they have found evidence of water, icy mountains, a liquid ocean, and an atmosphere. And for this reason, for the first time in 2007, NASA sent an orbital mission to study the asteroid belt and this dwarf planet, which was named the DAWN mission. But why is this dwarf planet so strange and special, and what did the Dawn Mission discover on this dwarf planet?
The story of the discovery of Ceres Discovery of Dwarf Planet Ceres
The story of Ceres' discovery is quite unique and interesting. The credit for the initial process of its discovery goes to the famous German astronomers Johannes Kepler and Tycho Brahe. When Kepler saw Tycho's astronomical data, he did a lot of research to understand the movement of the planets. Due to his work, he made a very important discovery, which we know today as Kepler's Law of Planetary Motion. Along with this discovery, he noticed another thing: that there is a big gap between Planet Mars and Jupiter.
But still, no one paid attention to the matter of the planet between Mars and Jupiter, nor was any action taken on it. But in 1781, William Herskill discovered a new planet, which we know today as Uranus, and with this, the search mission gained a lot of momentum. But seeing the small size of Ceres and other large asteroids like those made of rocky materials, scientists also placed Ceres in the category of an asteroid.
For many years, Ceres was called an asteroid, but Ceres was so different from its neighboring asteroids and so big that in 2006, scientists declared it a dwarf planet. Ceres is the largest object present in the asteroid belt, whose diameter is about 950 kilometers. Apart from Ceres, giant asteroids like Vesta, Pallas, and Hygiea are also present in the asteroid belt. Ceres completes one revolution around the sun in approximately 4.6 Earth years and takes 9 hours to rotate on its axis.
It is believed that Ceres was formed around 4.5 billion years ago with the formation of our solar system. Many theories and speculations have been made regarding its formation. According to one theory, due to gravity, the rotating gases and dust particles gathered at one place, and with this, the dwarf planet Ceres was formed. Scientists have mentioned Ceres in the category of a protoplanet, which means that it started forming as a planet in the starting stages of its formation, but the process of its formation could not be completed.
That means you can also call it an incomplete planet. The credit for this failure goes to the strong gravitational force of the planet Jupiter, which stopped Ceres from becoming a complete planet. The pieces left in the formation of the planet Ceres settled at the same place and started revolving around the sun, which we know today as the asteroid belt.