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INVISIBLE SHIELD OF EARTH...

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ELECTROMAGNETIC FIELD OF EARTH INTRODUCTION                      The motions of the liquid iron and nickel outer core of the earth are thought to create the earth’s magnetic field. This magnetic field resembles a dipole as if a giant bar magnet was embedded inside. However, the axis of the dipole is not aligned with the rotational axis of the earth. Neither is it centered in the earth. EARTH'S MAGNETIC FIELDS PROTECT US FROM SOLAR WIND AND SPACE RADIATION.            The Sun is a burning ball of gas that reaches such extreme temperatures that gas flies out from it at very high speeds. In fact, many of the electrons in the Sun’s atoms have enough energy to actually leave the atoms. The abandoned charged atoms are called ions. These ions and electrons flow outward from the Sun, and together they are known as the solar wind.           When the solar wind travels with...
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KUIPER BELT..

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KUIPER BELT INTRODUCTION kuiper belt is an area of ou r solar system t hat is e stim ated to stretch across 20 AU of space.it is contains s mall asteroid and some big asteroid size of Pluto.this things made mostl y of ice and other g ases such as ammonia,nitrogen ,m eth ane and water. the kuiper belt ext ends from rough ly the orb it of neptu ne at 30AU to 55AU from sun.the main objects o f th is belt covers much of this r egion .   FAC TS ABOUT THE KUIPER BELT 1. there cou ld be more than a trillion comet nucl ei in the main body of the kuiper belt. 2.the largest kuiper belt family members are pluto, makemake , haumen, lxion, quaoar etc. 3.the ices in the kuiper be lt data back to the formation of sol ar system .   There have been more than a thousand objects discovered in the Kuiper Belt, and it’s theorized that there are as many as 100,000 objects larger than 100 km in diameter. Given to their small size and extreme distance from Earth, the che...
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WORLD'S LARGEST SPACE TELESCOPE

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JAMES WEBB SPACE TELESCOPE(JWST) INTRODUCTION (credit :NASA)              james webb space telescope is a part of NASA's next generation space telescope program.it is a one kind of space telescope like Hubble space telescope.it is developed in coordination between NASA,the European space agency and the Canadian space agency. Building the telescope has taken Nasa two decades, and launch is expected in 2018.           JWST will offer very high resolution and very high sensitivity from the long wavelength visible light.the JWST primary mirror is made of 18 hexagonal mirror segment and combined mirror size of 6.5 miter diameter. image by:NASA MAJOR GOALS OF JWST ARE AS FOLLOWING: HOW TO GALAXY EVOLVE? HOW STARS AND PLANETARY SYSTEM INTERACT AND SHAPE? WHAT IS SHAPE OF UNIVERSE? WHAT IS THE NATURE OF THE DARK MATTER?   HOW DID THE UNIVERSE BUILD UP ITS PRESENT CHEMICAL COMPOSITION?   ...
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