What is there more of, stars in the observable universe or grains of sand on earth?

Question: What is there more of, stars in the observable universe or grains of sand on earth?
- Keywords:
  earth,
  grains,
  observable,
  sand,
  stars,
  universe
Asked by charlie13 to David, Luna, Probash on 25 Mar 2011 in Categories: General.
- David Pyle answered on 25 Mar 2011:
  
  Good one – stars in the observable universe? A guess – but I’ll do the calculation later. Actually, no, its probably sand grains!

Question: What is there more of, stars in the observable universe or grains of sand on earth?