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They are traveling to explore or experience something in one form or another, a hunting trip to africa could be called an expedition, and a sight-seeing trip to china could also be called an expedition.
Anyone who goes into space is called an Astronaut, or Cosmonaut.
# ====== ---- ====== ====== That person is called a canadient
this person is called a pedestrian
A quitter!
whooo
A person who is not a member of Congress but goes there to speak about and to advance a particular cause is called a lobbyist.
this person is called a soldier
They are treasonous and are called traitors.
Its called a dive
an expeditionaire?
A person who goes against the flow (of society, their community, their established culture, and so on) might be called a nonconformist.