This requires a definition of space.  For your question to be logical, <i>space</i> should be taken as the thing that is among and around matter.  Then on it may be researched physically.  Buf if <i>space</i> is taken to mean the thing that exists among and around <i>perceivable</i> matter, then your question becomes obscure, as this means that space is matter, but just not perceivable.  And therefore it exists, also without relation.