HOW MANY ATOMS ARE THERE IN THE. UNIVERSE?

It's no secret that the universe is an extremely vast place. That which we can observe "the known Universe" is estimated to span roughly 93 billion light years. That's a very impressive number especially when you consider it's only what we've observed so far. And given the sheer volume of that space, one would expect that the amount of matter contained within would be similarly impressive. But interestingly enough, it is when you look at that matter on the smallest scale, that the numbers become the most mind-boggling. For example, it is believed that between 120 to 300 sextillion stars exist within our observable universe. But looking closer at the atomic scale, the numbers get even more inconceivable. At this level it is estimated that there are between ten quadrillion vigintillion and one hundred thousand quadrillion vigintillion atoms. And yet those numbers don't accurately reflect how much matter the universe may truly contain. This estimate accounts only for the observable universe which reaches 46 billion light years in any direction, and is based on where the expansion of space has taken the most distant objects observed.