I’m sure there are some insects and deep sea creatures which we haven’t yet observed. So we don’t know anything about them—including their speed.
Virtual particles are still only theoretical. I think of them as a mental model of mathematical objects that arise when we try to calculate interactions between real particles.
I know there are some experiments like casimir effect that are attributed to virtual particles. But, it is possible to explain it in other ways.
Short answer:
All Lemmy, Piefed, Mbin, and mastodon instances send posts to each other using a common language.
So you can potentially see everything in the fediverse from your instance.
The question is vague enough. This was the first thing that came to mind. ¯\(ツ)/¯