Question

Do the gravitones really exist..?

Answer 1

The most astounding fact is that everything is exist.
And Gravitons are the smallest elementary particles , due to which gravity exist.
But in my perspective everything is not absolute but it has probability to be exist.

Answer 2

yes scientist have discovered that there is a massless particle in the universe travelling by the speed of light which is named as 'graviton'

but physicists also said that there will a long time before the gravitons are considered as established subatomic pantheon ..

Hey mate! hope it helps you :-)