Misc: The sun has a core temperature of ________ Kelvin?

Questions

What animal is represented by the constellation Lacerta?

What sport is associated with the clubs of Essendon, Hawthorn and Collingwood?

On clothing, what does the symbol of a circle inside a square indicate?

Which European city is served by Galileo Galilei Airport?

What is the stage name of film actress Caryn Johnson born 1949?