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tides

Tides are the daily rise and fall of ocean water. Twice each day in most location, Water rises up over the shore until it reaches its highest level called high tide and water level is down from the shore until it reaches it lowest level called low tide. The tide occurring due to the gravitational …

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Artificial satellite & Satellite Launch Vehicles

Artificial satellite:    The artificial object, which is made by human, revolves around the earth or any other planet in a fixed orbit it is called an artificial satellite. The satellites work on solar energy and hence solar photovoltaic panels are attached on both sides of these satellites, which look like wings. Satellites are installed …

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Indian Space Research Organization (ISRO) भारतीय अंतराळ संशोधन संस्था 

Indian Space Research Organization (ISRO) (Bengaluru): This institute was established in 1969 with the aim of developing technology for making and launching of artificial satellites. ISRO has successfully launched a large number of satellites. India also has made remarkable progress in the science and technology of launch vehicles. Various types of launch vehicles have been …

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तारकासमूह (Constellation)

तारकासमूह (Constellation):– खगोलाच्या एका लहान भागात असलेल्या ताऱ्यांच्या गटाला तारकासमूह असे म्हणतात. (A group of stars occupying a small portion of the celestial sphere is called a constellation.) काही तारकासमूहात एखाद्या प्राण्याची, वस्तूची किंवा व्यक्तीची आकृती दिसते. त्यानुसार पाश्चिमात्य निरीक्षकांनी संपूर्ण खगोलाचे एकूण 88 भाग केले आहेत. प्राचीन पाश्चात्य खगोलशास्त्रज्ञांनी 12 सौर राशींची व भारतीय …

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stars

The thousands of twinkling stars that we observe in the clear night sky are part of our Milky Way. Some of the stars that we see are bright whereas others are faint. Stars radiating different colours such as blue, white, yellow and reddish can be seen in the sky. We also see stars with varying …

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GALAXIES

The universe contains billions galaxies. The galaxy includes many stars smaller than our Sun as well as many others that are thousands of times bigger than the Sun. It also includes many other celestial bodies such as clusters of stars, nebulae, clouds of gases, clouds of dust, dead stars, newly born stars, etc. galaxies vary in size, luminosity, and mas.