Will the universe end ?
It is difficult to think that the universe might end someday. But cosmologist, the people who study the universe ,are sure it will.
They think it will stop expanding outwards, start shrinking back to nothing. They call this event the "big crunch" . The star will burn out gradually , and finally there will be just lumps of rocks and dust floating around.
However don't worry to much about it . All this is in billions and possibly trillions of years from now . Moreover, there are still some scientist who thinks this won't happen at all ,and that the universe will go on forever.
They figure that gravity won't allow the universe to stop expanding ,and so it will just keep getting bigger and bigger.
It is difficult to think that the universe might end someday. But cosmologist, the people who study the universe ,are sure it will.
However don't worry to much about it . All this is in billions and possibly trillions of years from now . Moreover, there are still some scientist who thinks this won't happen at all ,and that the universe will go on forever.
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