Monday, 1 December 2014
Galaxy
GALAXY
A GALAXY IS A MASSIVE GROUP OF HUNDREDS OF MILLION STARS ALL HELD TOGETHER BY GRAVITY ORBITING A COMMON CENTRE .
MILKY WAY IS THE GALAXY IN WHICH OUR SOLAR SYSTEM IS INVOLVED
Sunday, 30 November 2014
what is a light year
WHAT IS A LIGHT YEAR
IT IS THE MEASURE OF DISTANCE STARS & PLANETS ARE SO FAR THAT WE CANNOT MEASURE IN KM SO HUGE DISTANCE ARE MEASURED IN LIGHT YEARS . LIGHT TRAVELS 299792.458 KM IN A SECOND .SO LIGHT YEAR IS THE DISTANCE TRAVELED BY LIGHT IN ONE YEAR APPROXIMATELY 9460000000000 KM
BLACK HOLE
BLACK HOLE
BLACK HOLES ARE THE REGIONS IN SPACE WITH STRONG GRAVITATIONAL FORCE. FROM IT NOTHING COULD ESCAPE NOT EVEN LIGHT . IN 1915 EINSTEIN PROPOSED THE CONCEPT OF BLACK HOLES AS A PART OF HIS GENERAL THEORY OF RELATIVITY
Friday, 21 November 2014
SOLAR SYSTEM
solar system
what is solar system? is it a house no it is a big place. part of milky-way galaxy with a star named by humans as sun & has a group planets which is big & small & also with several natural & man made satellite some planets has hydrogen some has other gases such as oxygen,carbon,helium etc
solar system records,greatest&smallest
1.largest planet --- Jupiter
2.smallest planet --- mercury
3.largest volcano---olymbusmons [mars]
4. rings planet --- Saturn
5.living planet--- earth
6.red planet--- planet
Thursday, 20 November 2014
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