Do Gravitons Exist?

[Rhondazvous]

Would there be a spectrum of energy analog in regards to gravitons as there is with photons ?

I guess I was assuming the LIGO device was measuring gravitational waves 'composed' of gravitons of identical energy equivalence.  If individual gravitons can have varying levels of energy, well, there outta be some really biguns leftover from the big bang flying around still and scattered sufficiently they are no longer organized into detectable waves but are more like the 'sea of neutrinos' we are saturated in.

And if there is enough of 'em is that the dark matter, or dark energy or quintessence, or ylem they are looking for and not finding ?

That's interesting. When you say gravity might be more like a sea rather than a wave, are you suggesting that gravity causes other things to move but does not itself move? The universe is floating in a sea. According to Hawking, Einstein said gravity is not like other forms of energy.