What size is a king pillowcase?

King-size pillowcases are the largest of all, measuring 20 x 36 inches (51 x 92 cm). They’re made to fit king-size pillows, which may be too big for a queen mattress. People with larger beds—king beds or California king beds—may benefit from using a pillow this size.


There are believed to be 50,000,000,000 galaxies in our universe. 

There are possibly as many as 100 billion planets like Earth in the Milky Way.