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neil armstrong was the first human to walk on the moon during the nasa (national aeronautics and space administration) apollo 11 mission on 20th july 1969.
neil armstrong oedd y dyn cyntaf i gerdded ar y lleuad yn ystod cenhadaeth apollo 11 nasa (gweinyddiaeth awyrenneg a gofod genedlaethol) ar 20 gorffennaf 1969.
