Satellite

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krtrim upagrah maanav nirmit vastuon hain jo saur mandal mein prthvee aur any grahon kee parikrama kar rahe hain. yah praakrtik upagrahon, ya chandramaon se alag hai, yah kaksha grah, bauna grah aur yahaan tak ​​ki kshudragrah. krtrim upagrahon ka upayog prthvee, any grahon ka adhyayan karane ke lie kiya jaata hai, jisase ki ve hamase sampark kar saken, aur door brahmaand ko bhee dekh saken. upagrahon mein un logon ke paas bhee ho sakata hai, jaise antarraashtreey antariksh steshan aur antariksh shatal
pahala krtrim upagrah 1 9 57 mein lonch kiya gaya soviyat sputanik 1 mishan tha. tab se, kaee deshon ne upagrahon ko lonch kiya hai, jisamen 3,000 se adhik vartamaan mein prthvee ke chaaron or chal rahe antariksh yaan chal raha hai. antariksh jank ke 8,000 se adhik tukade hone ka anumaan hai; mrt upagrah ya malabe ke tukade prthvee ke chaaron taraph ja rahe hain
apane mishan ke aadhaar par upagrahon ko vibhinn kakshaon mein lonch kiya jaata hai.sabase aam logon mein se ek bhoo-samakaalik kaksha hai. yah vah jagah hai jahaan ek upagrah prthvee kee kaksha mein 24 ghante lagate hain; usee samay kee maatra mein prthvee ko ek baar apanee dhuree par ghumaane ke lie le jaata hai yah upagrah prthvee par ek hee jagah mein rahata hai, sanchaar aur teleevijan prasaaran ke lie anumati deta hai.
ek any kaksha kam prthvee kee kaksha hai, jahaan upagrah keval grah se kuchh sau kilomeetar oopar ho sakata hai. yah upagrah ko prthvee ke vaayumandal ke baahar rakhata hai, lekin abhee bhee paryaapt hai ki yah antariksh se grah kee satah ko chitrit kar sakata hai ya sanchaar kee suvidha pradaan kar sakata hai. yah oonchaee hai ki antariksh shatal makkhiyon ke saath-saath habal spes teleeskop bhee hai.