FLAVOR OF SCIENCE

WAY OF THE END OF THE UNIVERSE 1.BIG CRUNCH                      bi g c runch is one of the reasons for the end of our universe. According to this theory, the universe will one day stop expanding. Then, as gravity pulls on the matter, the universe will begin to contract, falling inward until it has collapsed back into a super-hot, super-dense singularity.It starts out small, then expands as it heats.           Big crunch theory depends upon critical density of the universe. 2.BIG RIP            the  Big Rip  is a  hypothetical   cosmological model  concerning the  ultimate fate of the universe , in which the matter of the  universe , from stars and galaxies to atoms and subatomic particles, and even  spacetime  itself, is progressively torn apart by the  expansion of the universe  at a certain time in the future.           at that time all the galaxies,stars,planets even protons and electrons will go away from one another. 3. BIG FREEZE  

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?                    The James Webb telescope has been described as a '

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 the interplanetary magnetic field, the charged particles and magnetic fields interact with Earth’s magne