Who signed off his radio show by saying "Keep your feet on the ground and keep reaching for the stars"?

More Questions:

How many Witches are in a coven?

What was the name of the world's first nuclear submarine?

Which city staged the premier of "Gone with the Wind" that actress Hattie McDaniel couldn't attend due to her skin color?

What Russian composer wrote the ballet "Swan Lake"?

What is the name of Beethoven's only opera?

The novel "Gone With the Wind" was written by who?

Which Bay is located to the north of Spain?

Where is the Guggenheim museum?

What colors are the Swiss Flag?

Mach refers to the speed of what?

In what gland is human growth hormone produced?

Which Apollo 11 astronaut did not set foot on the moon?

In which battle was Horatio Nelson killed?

What name is given to the broad gap between the Saturn's A ring and B ring?

What year did The Outhere Brothers release the song "Boom Boom Boom"?