![]() – Planets, stars, moons, comets, meteors and asteroids, are some of the heavenly bodies in space. – Natural objects visible in the sky are called heavenly bodies. 3 What is the name of a person who studies the Earth?.1 What is the name of the heavenly bodies?.Q: Which planet is known as ‘Earth’s Twin?Īns: Venus is known as Earth’s twin because it’s shape and size are similar to that of Earth. There are several millions of such galaxies that make the universe. Our galaxy is a huge system of billions of stars, and clouds of dust and gases. There are several tiny pieces of rocks that orbit around the sun. Asteroids can be seen between the orbit of Mars and Jupiter. There are several tiny bodies which also move around the sun. It is a new moon night also known as new moon night or ‘ Amavasya’. A fortnight later, you’ll not be able to see any moon at all. Every once a month, you’ll see a full moon night. This means that the same side is always facing the Earth. The moon always moves in a synchronous rotation with Earth. On the moon, the atmospheric conditions are not favourable to support life. The moon moves around the earth in about 27 days and 8 hours. This is because it is nearer to our planet in comparison to the other celestial bodies. The moon appears to be extremely big to us. Our planet Earth only has one natural satellite which is the moon. Therefore, Earth is also known as the blue planet. This is because, a 2/3rds surface of the earth, is covered by water. If one looks from the outer space, the earth appears blue. This is also the reason, why life is existing only on Earth at the moment. Certain conditions which are necessary to support life are found only on earth. The shape of the earth is called Geoid since it is slightly flattened at the poles. The Earth is our home and the third nearest planet to the Sun. But now it is called only a celestial body (dwarf planet). Until August 2006, Pluto was also a planet. All of these eight planets of our solar system move around the sun in fixed paths. These paths are elongated. These are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The word planet is acquired from the Greek word, ‘Planetai’ that means wanderers. The sun is the primary source of light and heat for the entire solar system. It is huge and is made up of extremely hot gases. Stars are the celestial bodies having their own heat and light, which they emit in large amounts. The sun, eight planets, satellites, stars and some other celestial bodies known as asteroids and meteoroids form the solar system. On the other hand, there are some celestial bodies that do not have their own heat and light. You can locate it with the help of the Saptarishi. The Pole Star always remains in the same position in the Sky. This means, that the apparent position of Pole Star is close to one of the celestial poles, and it lies approximately directly overhead when viewed from the Earth’s North Pole or South Pole. It is approximately aligned with the Earth’s axis of rotation. The North Star known as the Pole Star indicates the north direction.Ī pole star is a visible star. In archaic times, people used stars to determine directions during the night. The sun is also a star.įurther, when you look at the night sky, you’ll see different patterns formed by the different groups of stars. Such celestial bodies are known as stars. They are composed of gas and have their own light and heat. Some of the celestial bodies are very big and hot. Even an asteroid in space is a celestial body. The Kuiper belt contains many celestial bodies. This includes every natural object that is located outside the Earth’s atmosphere, such as the Moon, the Sun, an asteroid, planet, or star. The sun, the moon, and all the objects, shining in the night sky are known as the Celestial Bodies.
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