Solar System (The Sun and Planets) ~ Science Physics

Solar System (The Sun and Planets)

What is the solar system answer? How many planets are in our solar system?

How many planets are in our solar system 2019?

Our solar system consists of an average star we call the Sun and other planets, Satellites and comets which revolve around the Sun make our Solar System.

The Sun

Our sun is medium sized star emitting heat and light countinously. It is very big as compared to the Earth. Its Diameter is about 1.4 millions Km, Which is about 110 greater than the Earth. Its consist of Hydrogen and helium. Its outer surafce has less temp than inner surface.

The Planets

The eight planets which revolve around the sun and form our solar system are named as Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus and Neptune. There arrangements is shown in firgure.

Mercury

Mercury is a planet closest to the sun having almost no atmosphere and no water. It is the smallest planet of the solar system. Its outer layer consist of rocks. Beneaththe rocky layer, most of the palnet comprises of iron.

Venus

Venus is similar to Earth in Size and mass. Its atmosphere primarily consists of carbon dioxide which traps heat and makeit hotter than mercury.

Earth

Earth is the 3rd planet from the sun. Its atmosphere, distance from the sun and many others factors have made it heaven. The central part of the earth is solid iron core which creats magnetic field. It is surrounded by the thick layer of mloten rocks called mantle. The surface of the earth is made of water, air, and solid ground. Its atmosphere consist of nitrogen, oxygen,carbon dioxide and other gases.

Mars

Mars is also called red planet due to its reddish colour. Its colous is due to a layer of Iron-rich dust. The planet has a central core of iron, Surrounded by a thick layer of rock. Its atmospere is thinner than that of the earth. Mars has water but it is locked up as ice. Scientists think that many million of years ago, there was earth like climate on Mars.

Jupiter

Jupiter is the largest planet in the solar system. It is a gas planet mainly composed of hydrogen and helium gases . It has no real Surface. The gaseous clouds create a weather including storms.

Saturn

Saturn is the Second largest planet in the solar system. like jupiter, It is made up of gases mainly hydrogen and helium. Staurn is encircled by thin rings consists of billions of snowballs. These rings are over 302,000 Km in diameter. Through a telescope the palnet appears beautiful due to its rings.

Uranus

Uranus is also a gas planet , but its compostion is different from other gases planets. It contains methane in addition to hydrogen and helium. Due to methane its appear blue green in colour.

Neptuane

Neptunae has a core of molten rock. Around the core, there is very cold water layer. The top layer is made of hydrogen ,helium and small amount of methane. Methane gives it blue colour.