Excellent, envy, endavour, end, entertainment, entertain, and enederman
Any word on Earth that starts with D.
most likely
Zagato (Aston-Martin)
Yes.
There has not been any found yet.
Omaha, Nebraska starts with "O."
IntercomIntellectImpossibleInsistInclineIrritable
No, in recent history no human has set foot on any planet other than earth !
unselfish
Any word that starts with the letter 'U' elsewhere.
Vulture.
butter