2 1 st - century ▁astronom ers ▁Category : 2 1 st - century ▁American ▁women ▁writers ▁Category : 2 1 st - century ▁American ▁women ▁scient ists ▁Category : American ▁women ▁astronom ers ▁Category : American ▁educ ators ▁Category : American ▁femin ists ▁Category : American ▁film ▁produ cers ▁Category : American ▁science ▁writers ▁Category : American ▁women ▁bi olog ists ▁Category : B rown ▁University ▁al umn i ▁Category : Har vard ▁University ▁al umn i ▁Category : L iving ▁people ▁Category : N AS A ▁people ▁Category : Pe ople ▁from ▁War wick , ▁Rh ode ▁Island ▁Category : S cience ▁communic ators ▁Category : S cience ▁communication ▁award ▁w inners ▁Category : W omen ▁science ▁writers ▁Category : Univers ity ▁of ▁Rh ode ▁Island ▁al umn i <0x0A> </s> ▁J ovan ▁ Ć irk ović ▁( ; ▁ 1 8 7 1 ▁– ▁ 1 9 2 8 ), ▁known ▁as ▁Č ifa ▁( Ч и фа ) ▁or ▁ Ć ir ko - pa š a ▁( Ћ и р ко - па ша ), ▁was ▁a ▁Ser bian ▁teacher , ▁revolution ary ▁( Ch et nik ) ▁during ▁the ▁Mac ed onian ▁Str ug gle , ▁and ▁politician . ▁ ▁Life ▁ Ć irk ović ▁was ▁born ▁in ▁Pl jev l ja , ▁Ott oman ▁Empire ▁( now ▁Mont en eg ro ), ▁into ▁a ▁Ser bian ▁Orth odox ▁family . ▁He ▁finished ▁primary ▁school ▁in ▁his ▁h omet own . ▁He ▁graduated ▁from ▁the ▁Te acher