Llant snat tbagustin n yesmilen deg wegraw aniṭij. Tamezwarut, tesɛa 32 imelyan km di tehri, tezga gar Meɣres d Yebter. Tis snat d Tabagust n Kuiper, teggug nnig n 5 imelyaren km seg yiṭij , tezga deg tlisa n unegraw aniṭij. Imelyan n yesmilen yesɛan udem izelgen zgan di tbagust tameqrant, kra d imectiṭaḥ am uɛeqqa, tiyaḍ sɛant imiyyaten ikilumitren di tehri. Ameqran deg-sen, Ceres, yesɛa 952 km d netta kan i d imneneḍ f idra n tudsa ines tameqrant. Kra imusnawen ttwalin dakken kra tɣawsiwin yellan deg tbagust-agi, yezmer lḥal ttekkant deg tlalit n tudert deg wemtiweg Akal. Tabagust ur temsawi ara : kra n temnaḍin d tilmawin akk ma d tiyaḍ ččurent d ismilen. Tabagust n Kuiper Tabagust n Kuiper tettusemma ilmend n umusnaw Gerard Kuiper, amezwaru i tt-ibedren deg iseggasen 1950. d acu kan nerğa alamma d iseggasen 1990 akken ad sbegnen imusnawen dakken tabagust-a tella s tidett. Tamnaḍt-agi tga am izebgaten, tesɛa ugar n 35 000 n iẓra yugaren 100 km di tehri. Tadusi ines tugar s 100 iberdan tabagust tameqrant.Am tbagust tameqrant, d nettat kan i d-yeqqimen seg uḍebsi mi d-yennulfa wegraw aniṭij. Snat seg 3 yemtiwgen imceṭaḥ llant dinna: Eris d Pluton. Asigna n Oort Tabagust n Kuiper tezga deg tlisa n wegraw aniṭij, yezmer tella taɣawsa taneggarut i s d-yezzin: asigna n Oort. D imelyaren n yeẓra yedlan s wegris yellan deg-s, yezga deg tlisa n wegraw aniṭij-nneɣ. Anadi deg tbagustin Pioneer 10, deg yulyu 1972, d taɣawsa tamezwarut yuzen wemdan ɣer tbagust. Iɣerruba Pioneer 11, Voyager 1 d 2, Galileo, Cassini, NEAR, Ulysses d New Horizons ula d nutni sawḍen armi tabagust n Kuiper . Ɣas ugaden dakken iɣerruba cegɛen deg inigen imezwura ad ḥazen iẓra-agi .Imusnawen fehmen ɣef zik lḥal dakken f idra n tadusi tamectuḥt n tbagust ur telli tugdi fell-asen. Ad nesmekti dakken Pluton tura yettiki i yeẓra n tbagust n Kuiper, kksent imusnawen seg wegraw n yemtiwgen. Taɣbaylut :