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Brief information about 2nd fastest thing discussed.
If you're wondering about the 2nd fastest thing in the Universe, we've got a cool answer for you. Some scientists believe that it's neutrinos - tiny, nearly massless particles that travel at incredible speeds. Interesting, huh?

Highlights:
What is the 1st fastest thing in the universe?
Is light or dark faster?
Is there a speed faster than light?

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