Which is the only place where a flag is not saluted?

The only place where a flag flies all day, never goes up or comes down, never flies half-mast and does not get saluted, is the moon. Yes it is the American flag, the only country to have landed people on the moon. Between 1969 and 1972, 12 astronauts walked on the moon, spending 170 hours roaming over 100 km (over 60 miles). They brought home 400 kilograms (880 pounds) of soil and rock, and 30,000 photographs.

• The Apollo 17 crew was the last group of men on the moon. On December 11, 1972, they left behind a plaque that reads: "Here Man completed his first exploration of the Moon, December 1972 A.D. May the spirit of peace in which we came be reflected in the lives of all mankind."

• The first words spoken on the moon, by Neil Armstrong, are well known, but what were the last words spoken from the moon? "America's challenge of today has forged man's destiny of tomorrow." — Commander Eugene Cernan, Apollo 17 Mission, December 11, 1972.

• Did you know that all the planets in our solar system rotate anticlockwise, except Venus? It is the only planet that rotates clockwise

• Did you know that no piece of square dry paper can be folded in half more than 7 times?

— Compiled by Gaurav Sood