>>531084796
Nope that's just clickbait.
He was killed by the nine using Antimatter/ Dark matter directly into his brain.
Graviton Lance works by manipulating gravity into a point which causes a singularity at the intersection point between both its shots which creates an initial implosion followed by an explosion of strange/void matter.

The JFK attack left no residual radiation or energies which they talk about being abnormal because their own efforts to create such an effect Graviton Lance, do leave those residual strange matter signatures.

So the Nine created this phenomena with their own abilities or technology which far surpasses our own which was researched to create gravity based weapons like Graviton Lance. They investigate a rival research operation in Moscow because they suspect them of the assassination but their findings indicate that all efforts to weaponize the strange matter ended in catastrophic failure.

If the nine used the perfect amount of Anti Matter the reaction would consume its own energy leaving no residuals like a gravity weapon would.