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  THE   UNIVERSE   CONTAIN EVERYTHING  that   exists, from  the tiniest   subatomic  particles   to  glacial  super .clusters(the largest  structures  known). Nobody   knows   how  big  the  universe  is ,  but  astronomers    estimate  that  it  contains    about   100 billion  galaxies , each  comprising   an  average of   100  billion  stars.The  widely  accepted theory  about  the  origin  of  the  Universe   is  the  big  bang theory. Which  states   that  the  Universe   came  into  being  in a  huge  explosion-the  big  bang -  that  took  place   between   10 and...

   If  want to download free stock images to add to your website, blog, social profiles or anything else, you have to know where to look for them online. The best sites have huge libraries of high-quality images in every category imaginable that you can use for practically anything at all—without needing to give attribution if you'd prefer not. Some  of  these  websites   are - Unsplash: Crowdsourced Photos from Photographers Around the World   Unsplash is a well-known favorite, featuring some of the most professional looking photography you'll find anywhere online. All of its photos come from the generous photographers who donate them to the community to use for free, no attribution necessary (but appreciated). You can create your own account on Unsplash to keep track of photos you love. Organize them into collections or like them to quickly save your favorite ones to your profile.   Download Unsplas...

  TSUNAMI     IS  A  JAPANESE   WORD  ,WHICH  means  'harbor waves'. It   is   a  series   of  water   waves   caused  by   the   displacement   of    of  a  large  volume   of   a  body  of  water ,usually   an   ocean. Tsunamis    are  caused   by  under  sea  landslides   or  by  'sea  quakes',that  is  an   earthquake   whose  epicenter    lies  below   the  ocean .If  the  sea  bed  is  displaced  up  to  several   meters,the  water  layer    of  several  kilometer   in  thickness     above ...