Jens Fredrik Schroeter
... that astronomy professor Jens Fredrik Schroeter first learned his subject during childhood when his father, a sea captain, taught him how to use the sextant?
... that <a href="./Astronomy" id="mwD8g" rel="mw:WikiLink" title="Astronomy">astronomy</a> <a href="./Professor" id="mwD8k" rel="mw:WikiLink" title="Professor">professor</a> <b id="mwD8o"><a href="./Jens_Fredrik_Schroeter" id="mwD8s" rel="mw:WikiLink" title="Jens Fredrik Schroeter">Jens Fredrik Schroeter</a></b> first learned his subject during childhood when his father, a <a href="./Sea_captain" id="mwD8w" rel="mw:WikiLink" title="Sea captain">sea captain</a>, taught him how to use the <a href="./Sextant" id="mwD80" rel="mw:WikiLink" title="Sextant">sextant</a>?