Our solar system is one of over 500 known solar systems in the entire milky way galaxy. The solar system came into being about 4.5 billion years ago when a cloud of interstellar gas and dust collapsed, resulting in a solar nebula, a swirling disc of material that collided to form the solar system.
The solar family has eight planets along with the sun - All planets are categorized into two categories—terrestrial planets and gas planets.
Terrestrial planets are -
- Mercury
- Venus
- Earth
- Mars
Gas planets are -
- Jupiter
- Saturn
- Uranus
- Neptune
Sun -
- The sun is dominant in the solar system because about 99.99% of the matter of the solar system body is contained in the Sun.
- The Sun is a star.
- Sunlight takes 8 minutes 16.6 seconds to reach the Earth.
- The source of the sun's energy is the nuclear fusion occurring there, in which hydrogen would convert to helium.
Mercury -
- Mercury is the nearest planet to the Sun.
- It rotates in 59 days on its axis.
- It is the smallest planet, completing the orbits of the sun in 88 days.
- It revolves around the sun at the fastest speed.
- It has no satellite.
Venus -
- Venus is the nearest planet to the earth.
- It is the brightest star called the morning star or evening star as it appears in the morning in the East and in the evening in the West.
- It is called the earth's sister or earth's twin planet.
- Venus completes the orbiter of the sun in 225 days.
- It also has no satellite
Earth -
- Due to the presence of water, It is also called a blue planet. It is the only planet in the solar system that has life.
- The Earth revolves around the sun in 365 days 5 hours 48 minutes 40 seconds.
- Earth's only satellite is the moon.
Moon - Moon is only one satellite of the earth, and Neil Armstrong is the first person who lands on the moon.
Mars -
- Mars is also called a Red planet because its surface is red due to iron oxide.
- Its two satellites are "Phobos" and "Deimos."
- The largest volcano in the solar system is "Olympus Messi," and the highest peak in the solar system is the " Nix Olympia", which is three times higher than mount Everest.
Jupiter -
- It is the most giant planet in the solar system, which orbits the sun in 11 years 315 days 1 hour.
- It has 67 satellites, Jupiter's " Ganymede" satellite is the largest in the solar system.
- It is a yellow planet.
- It rotates fastest on its axis.
Saturn -
- Saturn is the second-largest planet in the solar system. It looks like a yellow star in the sky.
- It completes the orbit of the Sun in 29.5 years. It rotates on its axis in 10.2 hours.
- The number of Saturn's satellites has now increased to 82. "Titan" is the largest satellite of Saturn.
Uranus -
- The explorer of Uranus is sir William Herschel.
- It is the seventh planet from the Sun and the third-largest planet in size in the solar system.
- Its known satellites are 27. Its largest moon is "Titania."
- Uranus also revolves East to West like "Venus," while other planets revolve from West to East.
Neptune -
- It is the coldest planet in the solar system.
- Its surface temperature is -193℃.
- It is located at the most distance from the Earth and The Sun.
- It has eight satellites.
- Its atmosphere consists of 80% of hydrogen and 19% of helium.
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