Asteroit: Genellikle d\u00fczensiz \u015fekilli, G\u00fcne\u015f Sistemi’nin olu\u015fumundan arta kalan k\u00fc\u00e7\u00fck, kayal\u0131k nesneler.<\/p>\n
Kuyruklu Y\u0131ld\u0131z: Donmu\u015f bir \u00e7ekirde\u011fe sahip b\u00fcy\u00fck, donmu\u015f gazlar\u0131 olan, toz ve kaya k\u00fctleleri.<\/p>\n
Meteor: Asteroitler ve kuyruklu y\u0131ld\u0131zlardan kopan par\u00e7alar ve enkaz.<\/p>\n
Meteor Ya\u011fmuru: D\u00fcnya atmosferinde birden fazla meteoroidin girip yanmas\u0131.<\/p>\n
Ate\u015f Topu: Geni\u015f bir alanda g\u00f6r\u00fclebilen ola\u011fan\u00fcst\u00fc parlak bir meteor.<\/p>\n
G\u00f6k ta\u015f\u0131: D\u00fcnya atmosferinden ge\u00e7ip par\u00e7alanmayan ve y\u00fczeye d\u00fc\u015fen meteorlar.<\/p>\n
C\u00fcce Gezegen: G\u00fcne\u015f’in etraf\u0131nda y\u00f6r\u00fcngede d\u00f6nen, \u00e7evresini enkazdan temizlemek i\u00e7in yeterli k\u00fctleye sahip olmayan k\u00fc\u00e7\u00fck k\u00fcresel (veya k\u00fcresele yak\u0131n) bir g\u00f6k cismi.<\/p>\n
Asteroitler<\/span><\/p>\n Asteroitler, G\u00fcne\u015f’in etraf\u0131nda d\u00f6nen k\u00fc\u00e7\u00fck, kayal\u0131k nesnelerdir. Neredeyse k\u00fcresel olan birka\u00e7 tane olmas\u0131na ra\u011fmen, \u00e7o\u011fu asteroit d\u00fczensiz \u015fekillidir. Bilinen bir milyondan fazla asteroit vard\u0131r ve \u00e7o\u011fu Mars ve J\u00fcpiter aras\u0131ndaki ana asteroit ku\u015fa\u011f\u0131nda bulunabilir. Asteroitler, G\u00fcne\u015f Sistemi’nin erken olu\u015fumundan kalan kayal\u0131k kal\u0131nt\u0131lard\u0131r. Bir asteroit y\u00f6r\u00fcngesini bir gezegenle payla\u015ft\u0131\u011f\u0131nda, Truva Asteroidi olarak bilinir. D\u00fcnya’n\u0131n iki truva asteroidi vard\u0131r, ancak her ikisi de G\u00fcne\u015fin etraf\u0131ndaki y\u00f6r\u00fcngede D\u00fcnya’dan \u00f6nce ilerledi\u011fi i\u00e7in bunlar\u0131 g\u00f6zlemlemesi zordur.<\/p>\n Kuyrukluy\u0131ld\u0131z<\/span><\/p>\n Kuyruklu y\u0131ld\u0131zlar kozmosun kar toplar\u0131d\u0131r. Bu buzlu donmu\u015f gazlar, kayalar ve toz k\u00fctleleri, G\u00fcne\u015f’in y\u00f6r\u00fcngesinde olduk\u00e7a eliptik yollarda d\u00f6ner ve genellikle ilerlerken kendi etraflar\u0131nda d\u00f6nerler. Y\u00f6r\u00fcngeleri onlar\u0131 G\u00fcne\u015f’e yakla\u015ft\u0131rd\u0131\u011f\u0131nda \u0131s\u0131n\u0131rlar. Bu da kat\u0131 buzun, ay\u0131rt edici kuyruklu y\u0131ld\u0131z kuyru\u011funa d\u00f6n\u00fc\u015fmesine neden olur. Muhtemelen en \u00fcnl\u00fc kuyruklu y\u0131ld\u0131z, Temmuz 2061’de g\u00f6klerimize geri d\u00f6necek olan Halley Kuyruklu Y\u0131ld\u0131z\u0131’d\u0131r. Kuyruklu y\u0131ld\u0131zlar\u0131n boyutlar\u0131, y\u00f6r\u00fcngeleri ve bile\u015fimleri o kadar \u00e7e\u015fitlidir ki, bu, y\u0131llar i\u00e7inde say\u0131s\u0131z s\u0131n\u0131fland\u0131rmaya neden olmu\u015ftur.<\/p>\n Meteor ya\u011fmuru<\/span><\/p>\n Kuyruklu y\u0131ld\u0131zlar veya asteroitler G\u00fcne\u015f’in etraf\u0131nda dola\u015f\u0131rken arkalar\u0131nda bir enkaz izi b\u0131rak\u0131rlar. D\u00fcnya’n\u0131n y\u00f6r\u00fcngesi bu enkazla kesi\u015fti\u011finde, sonu\u00e7, gece g\u00f6ky\u00fcz\u00fcnde bir noktadan yay\u0131lan y\u00fczlerce (veya binlerce) parlak iz olur. Fark ettiyseniz meteor ya\u011fmurlar\u0131n\u0131 her y\u0131l hemen hemen ayn\u0131 zamanda g\u00f6r\u00fcyoruz ve meteorlar belirli gecelerde daha \u00e7ok oluyor. Bu nedenle bir meteor ya\u011fmuru, bir nesneden ziyade bir olay olarak daha do\u011fru bir \u015fekilde tan\u0131mlanabilir: O k\u00fc\u00e7\u00fck par\u00e7ac\u0131klar (meteorlar) atmosferin \u00fcst k\u0131s\u0131mlar\u0131na girdi\u011finde ve etraf\u0131ndaki havay\u0131 \u0131s\u0131t\u0131p parlatt\u0131klar\u0131nda ya\u015fanan hadise. Eta Aquariid ve Orionid meteor ya\u011fmuru, Halley kuyruklu y\u0131ld\u0131z\u0131n\u0131n b\u0131rakt\u0131\u011f\u0131 izden ge\u00e7en D\u00fcnya y\u00f6r\u00fcngesi taraf\u0131ndan olu\u015fturulurken, etkileyici Leonids ya\u011fmurlar\u0131, kuyruklu y\u0131ld\u0131z Tempel-Tuttle’\u0131n kal\u0131nt\u0131lar\u0131d\u0131r.<\/p>\n Meteor<\/span><\/p>\n Meteorlar en klasik uzay kayalar\u0131d\u0131r. Asteroitler ve kuyruklu y\u0131ld\u0131zlar\u0131n par\u00e7alar\u0131 ve enkazlar\u0131 olarak, G\u00fcne\u015f Sistemindeki en k\u00fc\u00e7\u00fck cisimlerden baz\u0131lar\u0131d\u0131r. Bu par\u00e7ac\u0131klar, geldikleri ana g\u00f6vdeyle yakla\u015f\u0131k olarak ayn\u0131 y\u00f6r\u00fcngede G\u00fcne\u015f’in y\u00f6r\u00fcngesinde d\u00f6nmeye devam eder ve zamanla y\u00f6r\u00fcnge bu par\u00e7ac\u0131klarla dolup ta\u015ft\u0131k\u00e7a ebeveynden uzakla\u015f\u0131rlar. Bir meteor D\u00fcnya atmosferine girip yand\u0131\u011f\u0131nda, g\u00f6ky\u00fcz\u00fcnde parlayan bir iz b\u0131rak\u0131r; bir y\u0131ld\u0131z kaymas\u0131 yarat\u0131r. Meteorlar\u0131n boyutlar\u0131 bir toz tanesinden k\u00fc\u00e7\u00fck bir asteroide kadar de\u011fi\u015fiklik g\u00f6sterebilir.<\/p>\n Ate\u015f topu<\/span><\/p>\n Atmosfere giren bir meteor parlakl\u0131k a\u00e7\u0131s\u0131ndan Ven\u00fcs’\u00fc ge\u00e7erse bu bir ate\u015f topudur. B\u00fcy\u00fck bir ate\u015f topu 5-10 saniye boyunca g\u00f6r\u00fcn\u00fcr kal\u0131r ve e\u011fer sizin yak\u0131n\u0131n\u0131zda bir yerde g\u00f6r\u00fcrseniz, kendinizi g\u00fcrleyen bir patlama sesi duymaya haz\u0131rlay\u0131n. Bununla birlikte, d\u00fc\u015fmesi 10 saniyeden uzun s\u00fcren bir ate\u015f topunun, bir uydu veya D\u00fcnya’ya d\u00fc\u015fen bir t\u00fcr u\u00e7ak olmas\u0131 daha olas\u0131d\u0131r. Bazen d\u00fc\u015fen bir ate\u015f topu patlayabilir, 2000 y\u0131l\u0131nda d\u00fc\u015fen Tagish G\u00f6l\u00fc g\u00f6kta\u015f\u0131nda oldu\u011fu gibi. O patlamada d\u00fc\u015fen meteor, g\u00f6ky\u00fcz\u00fcnde Hiro\u015fima bombas\u0131n\u0131n yakla\u015f\u0131k d\u00f6rtte biri kadar bir g\u00fc\u00e7le patlad\u0131 ve British Columbia’daki Tagish G\u00f6l\u00fc \u00e7evresine ya\u011fan yakla\u015f\u0131k 500 par\u00e7aya ayr\u0131ld\u0131.<\/p>\n G\u00f6k ta\u015f\u0131<\/span><\/p>\n G\u00f6k ta\u015flar\u0131, D\u00fcnya y\u00fczeyine yap\u0131lan yolculukta hayatta kal\u0131p yanmayan meteorlard\u0131r. \u015eimdiye kadar, D\u00fcnya’da 69 binden fazla meteor bulundu (ve adland\u0131r\u0131ld\u0131). G\u00f6ky\u00fcz\u00fcnde hilal Ay’\u0131nkine benzer bir parlakl\u0131\u011fa sahip bir meteor \u00e7izgisi g\u00f6r\u00fcrseniz, yolculuktan sa\u011f \u00e7\u0131kma ve D\u00fcnya’ya d\u00fc\u015fme \u015fans\u0131 y\u00fcksektir. Meteorlar her g\u00fcn D\u00fcnya’ya d\u00fc\u015fer, ancak bir tanesini bulmak inan\u0131lmaz derecede nadirdir. Farkl\u0131 g\u00f6k ta\u015f\u0131 t\u00fcrleri vard\u0131r ancak genel olarak \u00e7o\u011fu demir g\u00f6k ta\u015f\u0131, ta\u015fl\u0131 g\u00f6k ta\u015f\u0131 veya ta\u015fl\u0131 demir g\u00f6k ta\u015f\u0131 olarak s\u0131n\u0131flara ayr\u0131labilir.<\/p>\n