That's true enough, but any organism dense enough to survive three billion electron volts would have to be made of solid nuclear material.
12 seconds sound clip from the Forbidden Planet (1956) movie soundboard.
You can hear this line at 01:19:28 in the Blu-ray version of the movie.
Quote context
[...]
- No, it just went away for some reason. It'll be back.
- Doc, an invisible being that cannot be disintegrated by atomic fission...
- No, skipper, that is a scientific impossibility.
- Hypnotic illusions don't tear people apart.
- It would sink with its own weight to the center of this planet.
- Well, you saw it yourself, standing in those neutron beams.
- It must've been renewing its molecular structure from one microsecond to the next.
[...]