It is well known that where there is nothing there is vacuum. but how is this possible , as we have gas all around world and it is the job of air to fill the empty spaces. So why not air get dispersed and fill that places .......and another question i" Is vacuum create pressure ? If yes why there is no pressure between molecule of gases or any other place like outer space ? And if no ,then it is lengthy !!!! "If we start emptying a tumbler it create pressure {low pressure area } then why would the tumbler has no pressure at all after ejecting all the air from it ." these things i have stated can be wrong so please correct me with an easy simple broad answer