![]() ![]() When you are viewing the Sun from the surface of Mercury, it appears three times larger than when it’s viewed from the Earth. This planet is estimated to be just slightly larger than the Earth’s moon. Mercury is the smallest planet in the solar system, and the one closest to the Sun. List of the 8 Planets in Order from The Sun Mercury Other smaller bits of the exploding star that couldn’t form planets became asteroids, comets, meteoroids, and small moons. These objects are what became planets, dwarf planets, and large moons. Materials farther out in the solar nebula clumped together and smashed into each other to form larger objects, some of which grew big enough to be shaped into spheres by gravity. After collapsing, the cloud created a rotating, whirling disk of solid material referred to as solar nebula. It is believed that the solar system was formed approximately 4.5 billion years ago from a thick cloud of interplanetary gas and dust.Īccording to experts, this cloud collapsed as a result of the shock wave of a neighboring star, known as supernova, that exploded. Studies have shown that planet Earth is a mere dot in the enormous cosmos surrounded by countless stars that are accompanied by objects that perhaps have a life of their own. The organization further claims that the hundreds of billions of the stars we see are believed to have their own planets. To date, they’ve discovered thousands of planets orbiting other stars in the Milky Way, and discoveries of more planets continue to be reported. NASA further reports that outside the solar system, there are many more planets than the stars you see in the sky at night. History of the 8 Planets in Our Solar SystemĪccording to the National Aeronautics and Space Administration (NASA), the solar system is made up of the Sun and everything else that is bound to it through gravity, including planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, dwarf planets like Pluto, tens of moons, and millions of asteroids, comets, and meteoroids. ![]() The union defines a dwarf planet as a celestial body sitting in a direct orbit of the Sun but hasn’t cleared its orbit of other similar objects. The IAU further argued that Pluto is on a wildly slanted, elliptical orbit far away from the sun. In its argument, the IAU claimed that Pluto meets all the criteria except one - the ability to clear its neighboring region of other similar objects. So, in 2006 the International Astronomical Union (IAU) made an extremely controversial decision to demote Pluto to a dwarf planet, arguing that it failed to meet the three important criteria the union uses to describe an ordinary planet. But astronomers started questioning the legitimacy of Pluto as a planet, given that it was the odd one out. Up until 1990, everybody believed that the solar system had 9 planets. Ultimately, a planet does three things: It has to orbit a star, must have enough gravity to create a spherical shape, and must be able to move away from any objects of the same size near its trajectory. What Is a Planet?Ī planet is defined as a celestial body moving in an elliptical orbit around a star. Continue reading to learn more about the 8 planets in order from the sun. So far, they have discovered 8 planets in the solar system. Since time immemorial, scientists have been working tirelessly to unearth what is hidden out there in space.
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