According to general relativity and particle physics the existence of মহাকাশ is a prerequisite for the existence of matter (or energy). The মহাকাশ around all matter together is the Cosmos.
মহাকাশ is where mother earth live's our universe where all the planet's are where the moon is and stars it's a black মহাকাশ that can never end going down and there is no air up there
