by pjr » Wed Mar 27, 2013 12:58 am
"Caelum quaero"? (I seek for heaven)
"Caelum quaerens"? (seeking for heaven)
"Ego caelum quaerens"? (I, seeking for heaven)
"In caelum me iubet quaestio"? (The search commands me into heaven)
I'm not much of a Latinist, so don't trust any of those suggestions until a better Latinist has commented.
The concept you're looking for may be expressed in the motto of the Royal Air Force - "per ardua ad astra" (past obstacles to the stars).