UnScramble this Word: u g i r e p d?

Questions

Trivia : Whose laws first described the motion of the planets round the sun?

Trivia : What does the red spot on the Japanese flag represent?

Trivia : How many years old was the telephone before one was installed on the desk of the President of the United States?

Trivia : Which singer went solo after performing with the Commodores?

Trivia : Who said , "Marriage is a wonderful invention - but so is the bicycle repair kit"?