ब्लैक होल

thumb|250px|blaik hol blaik hol (aangrezi: Black Hole) aantariksh mean aisa kshetr hai, jisake dravyaman ka ghanatv itana badh jata hai ki as-pas ka koee bhi piand usake gurutvakarshan se bach nahian pata, prakash bhi nahian aur isalie vah dikhaee nahian deta.

• jab kisi b de tare ka poora ka poora eeandhan jal jata hai to usamean ek zabaradast visphot hota hai, jise suparanova kahate haian.
• visphot ke bad jo padarth bachata hai, vah dhire-dhire simatana shuroo hota hai aur bahut hi ghane piand ka roop le leta hai, jise nyootr aaun star kahate haian.
• agar nyootr aaun star bahut vishal hai to gurutvakarshan ka dabav itana hoga ki vah apane hi bojh se simatata chala jaega aur itana ghana ho jaega ki blaik hol ban jaega aur dikhaee nahian dega.
• saval ye uthata hai ki jab blaik hol dikhaee hi nahian deta to ye kaise kaha ja sakata hai ki yah blaik hol hai. isake kuchh praman haian. ek to jab bhi koee piand ya padarth blaik hol ke nazadik pahuanchata hai to usaki taraf khianchata chala jata hai. is prakriya mean vah lakhoan digri ke tapaman par jalata hai aur phir gayab ho jata hai jo is bat ka praman hai ki vah blaik hol mean sama gaya.
• ek aur praman ye hai ki jahaan blaik hol hota hai, usake gurutvakarshan kshetr ke asapas maujood tare usaka chakkar lagate rahate haian. inaki gati ko dekhakar khagolajn blaik hol ki sthiti aur usake akar ka anuman laga sakate haian.

panne ki pragati avastha

adhar

prarambhik

madhyamik

poornata

shodh

sanbandhit lekh

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