Question

Are there are more atoms in a glass of water than stars in the observable universe?

Answer 1

Probably, yes.

Explanation:

astronomers have put current stellar population at roughly 70 billion trillion (`70*10^22`)

Since a glass of water has many moles of water , and each mole contains about `22*10^23` molecules of water and each molecule contains 3 atoms , the scales tip heavily towards the glass of water

(http://www.skyandtelescope.com/astronomy-resources/how-many-stars-are-there/)