Crossword puzzle clue "down to earth person"

Down-to-earth person

___ Saknussemm, discoverer of the center of the earth in "Journey to the Center of the Earth"

___-warrior (person who fights for the earth)

First person to orbit the Earth

"___ you were the last person on Earth!"

Russian Gherman who became the second person to orbit the Earth

What not even the richest person on Earth has

Russian who was the first person to travel into space and orbit the earth (1961): 2 wds.