We don't see meteor hits that often but we are always having mass added to our planet by interstellar dust, meteorites and solar particles.
Correct me if I am wrong because I am no expert. But if I am right it could be tons per year. Has anyone else studied this?
Even common observation tells us that every "shooting star" you see is leaving, at least, particles in our atmosphere.
I hope I'm not out of line since I didn't watch the video, I'm just offering an answer to your question as to how we obtain more mass.
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