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| The Sun |
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| The star of our solar system, the sun provides the energy for the sustenance of life on earth. It is approx. 26,000 light years from the centre of our galaxy. The speed of the Sun’s orbit around the galaxy is 217 km/s. |
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| Mercury |
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| It is the closest planet to the Sun and also the smallest planet in the Solar System. Mercury revolves around the Sun in 88 days. The planet looks almost like our Moon and has no natural satellites of its own. Surface temperature on Mercury stays within −183 °C to 427 °C (−297 °F to 801 °F). |
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| Venus |
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| This planet lies second from the sun. It is also known as the Morning Star or the Evening star because it becomes brightest just before sunrise and just after sunset. It is highly similar to our planet with regards to gravity, size and the composition. It has no natural satellites. |
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| Earth |
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| Earth is the 3rd planet from the sun and is the home to life in the solar system. It is the biggest in size among the terrestrial planets of our solar system and is estimated to have formed around 4.54 billion years ago. It has a natural satellite called the Moon. |
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| 5 |
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| Moon |
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| Moon is Earth’s only natural satellite. It is the 5th largest satellite of the solar system. It is 1/3rd of the Earth’s size and completes an orbit around the Earth in 27.3 days. So far, it remains to be the only celestial body on which humans have set foot. |
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| Mars |
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| Mars is the 4th planet from the sun and appears red due to the presence of iron oxide on its surface. It has a think atmosphere. The topography of Mars includes craters like Moon, as well as valleys, mountains, deserts and polar ice caps like Earth. It is home of the highest mountain the Solar System, called the Olympus Mons, which rises to a height of 27 km. |
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| Jupiter |
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| Jupiter is 5th farthest planet from the Sun. In matters of size, it is the largest planet of the Solar system. Its size is two and a half times bigger than all the other planets combined together. It is build entirely of gas and has 63 recognized satellites till date. |
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| Saturn |
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| Saturn is the 6th distant planet from the Sun. It is also the 2nd largest planet in the solar system and is one of the gas giants. It also has a prominent cluster of rings around it and has around 200 observed satellites. |
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| Uranus |
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| It is the 7th planet according to distance from the sun. Uranus also has a ring system and 27 recognized satellites till date. It also has a magnetosphere and wind can blow on the planet at 250 meters/sec. |
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| Neptune |
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| Neptune is 8th planet in distance from the Sun. It is 17 times larger than the Earth and is denser than Uranus. It has 13 recognized satellites till date. |
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| Pluto |
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| Pluto is the largest body in the Kuiper belt and is classified as a planet since 1930. For its highly inclined and eccentric orbit, Pluto’s orbit crosses the orbit of Neptune periodically when Pluto becomes the 8th closest planet from the Sun. It is known to have 3 satellites. |
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