There are more stars in the observable universe than grains of sand on all of Earth's beaches—estimated at 10^24 stars versus roughly 10^18 to 10^19 grains.
Sources
- https://skyandtelescope.org/astronomy-resources/how-many-stars-are-there/ (skyandtelescope.org)
- https://consensus.app/questions/number-of-stars-in-the-observable-universe/ (consensus.app)
- https://worldmetrics.org/sand-grain-count-statistics/ (worldmetrics.org)
- https://medium.com/@anmol.v1/stars-vs-sand-the-ultimate-cosmic-showdown-7e086f40f7b9 (medium.com)
- https://www.universetoday.com/articles/are-there-more-grains-of-sand-than-stars (universetoday.com)
- https://www.esa.int/Science_Exploration/Space_Science/How_many_stars_are_there_in_the_Universe (esa.int)