Write short notes on the sun, The moon, and Galaxy
Answers
Answer:
Sun - The sun lies at the heart of the solar system, where it is by far the largest object. It holds 99.8 percent of the solar system's mass and is roughly 109 times the diameter of the Earth — about one million Earths could fit inside the sun.
Moon - The Moon is Earth's largest natural satellite.Some other planets also have moons or natural satellites. Our moon is about a quarter the size of the Earth.
Galaxy - A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. When you look up at stars in the night sky, you're seeing other stars in the Milky Way.
Explanation:
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Answer:
(a) The sun is considered the "head" of the solar system. It is a star, although it is smaller and less bright than most other stars. It is huge celestial body made up of extremely hot gases. It provides heat and light for the whole of the solar system. Life on earth depends on many factors, and sunlight is one of them. The sun is about 150 million kilometres away from earth.
(b) The moon is the only natural satellite of our planet earth. Its diameter is just about a quarter of the earth's diameter. It is comparatively close(3,84,400 kilometres away) to earth than all other celestial bodies. It does not support life. It revolves around the earth and rotates about its own axis in about the same time, due to which only one side of the moon is visible to us.
(c) Galaxy is a term that refers to billions of stars, clouds of dust and gases, and other celestial bodies considered as a single unit. The only bigger unit is the universe, galaxies make up the universe. The galaxy we live in is called the Milky Way.
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