WHY PLANETS ARE SPHERICAL AND GALAXIES DISK SHAPED .

INTRODUCTION

WE KNOW NATURE LOVES SYMMETRY , BUT HAVE YOU EVER WONDERED WHY NATURE LOVES TO BUILD SHAPES LIKE SPHERES OR DISK. HAVE YOU EVER WONDERED WHY PLANETS ARE SPHERICAL AND GALAXIES DISK SHAPE

THE BASIC REASON FOR THE FORMATION OF THESE TYPE OF SHAPE IS EQUILIBRIUM AND SYMMETRY.

WHY PLANETS ARE SPHERICAL

SUPPOSE OUR EARTH IS MADE OF SMALL BLOCK . THESE BLOCKS EXPERIENCE TWO FORCES GRAVITY( ACTING DOWNWARD) AND PRESSURE (ACTING UPWARD AND SIDEWAYS) AND SUPPOSE THE EARTH IS NOT SPHERICAL BUT ELLIPTICAL IN SHAPE HAVING GREATER NO OF BLOCKS AROUND THE EQUATOR .

SINCE SPHERICAL IS MORE SYMMETRIC ABOUT ALL DIRECTIONS .THE SIDE WAYS PRESSURE ON THE BLOCKS IS CANCELED BY NEIGHBORING BLOCKS AND THE DOWNWARD GRAVITATIONAL FORCE IS CANCELED BY THE UPWARD PRESSURE .

IN CASE OF ELLIPTICAL EARTH THE MORE NO OF BLOCKS AROUND THE EQUATOR WOULD DESTROY THE EQUILIBRIUM OF SIDEWAYS PRESSURE(FORCES) WHICH LET CHANGE IN THE SHAPE AND HENCE FORMING A SPHERICAL SHAPE

WHY PLANETS ARE FLAT DISK SHAPED

GALAXY OF FLAT DISK SHAPED
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THE SPIRAL GALAXIES FORM CIRCULAR DISK LIKE SHAPE AS WHEN THESE MASSIVE CLOUD OF GASES COLLAPSE DURING THE FORMATION OF STAR THEIR ANGULAR VELOCITY INCREASES WHICH DOMINATES THE GRAVITATIONAL FORCES .

DUE TO INCREASE IN THE ANGULAR VELOCITY IT HARDENS THE GAS TO COLLAPSE IN THE DIRECTION OF THE AXIS OF ROTATION AND THE GRAVITY MAKES IT TO FORM FLAT CIRCULAR DISK SHAPED.

HENCE THAT EXPLAINS WHY PLANETS ARE SPHERICAL AND GALAXIES DISK SHAPED.

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