Are there more stars in the universe than grains of sand on Earth?

From ABC Science Online, 19 August 2015: It may hurt your brain to think about it, but it seems that the answer is likely to be yes, or at least the numbers are roughly in the same ballpark. Astronomers actually set out to answer this question about a decade ago. It’s a tricky problem to Continue reading Are there more stars in the universe than grains of sand on Earth?