ABRI OORT

ABRI OORT, abri kurashakli sistemai Oftob, ki manbai kometahoi davrashon tuloni meboshad. Mavjudiyati Abri Oortro bori avval soli 1932 astronomi estoni E. Epik peshnihod karda bud. Soli 1950 astronomi ni- derlandi Yan Xendrik Oort in nazariyaro asosnok kard va ba sharafi u nomi Abri Oort guzoshta shud. Masofa az Oftob to hududhoi Abri Oort taqriban 50 000 – 100 000 v.a. yo yak s.r. ast.

Massai Abri Oort taqriban 3*10²⁵kilogramm (yo 5,0 massai Zamin) buda, karib 4,6 milliard, sol pesh ba vujud omadaast va yakchand trillion yadrohoi kometaho dorad. Unsurhoi Abri Oort az yakhporahoi dar tarkibashon ob, am­miak va metan mavjudbuda iboratand.

Onho dar nazdikii Oftob tashakkul yofta, zeri tasiri quvvahoi jozibavii sayyorahoi buzurg dar fa­zoy kayhoni pahn gardidaand. In quvvaho bazan kometahoro ba markazi Sistemai Oftob tela medihand, ki ehtimoliyati barkhurdi onhoro bo sayyoraho ziyod mekunad. A.Rahmonov.