The TRUTH is out there - It can mean the truth is actually somewhere, implying that whatever was stated before may not have been the truth.
The truth IS out there - It can also mean that the truth is definitely available to us, we just have to look for it.
The truth is OUT THERE - Change the inflection and it can be interpreted that the truth is so crazy, people won’t believe it.
While choosing the correct, most accurate words are important, so is the cadence we use in delivering those words verbally. I think much of our communication difficulties come from this aspect of expressing ourselves especially as it pertains to the individual interpretations of such.