Phobias: Pagophobia- Fear of ice or ______?

Questions

What name is given to the giant American transport plane, the C5?

An astronomical unit is the standard measurement taken from the earth to where?

Which King had Daniel thrown into the Lion's den?

What was the name of the German Republic of 1918-1933 overthrown by Hitler?

Which Soviet leader backed down over the Cuban missile crisis in 1962?