How to pronounce “theus” in English

impossibly huge. And that's the crazy thing about the cosmological realm, right? An atom is 10us 10 m across. A nucleus 10 theus5. That sounds crazy tiny and it is. But just our galaxy, you know, 10theus 15 going in smallness, 10 to the 21 going in bigness. And I'm just like, bro, man, where wheream I? What is this cruel joke reality has played on me? You want me to wrap my my mind around this