A lokacin bayyanarsa a 1986, Halley's Comet ya zama na farko da aka lura da shi dalla-dalla ta hanyar sararin samaniya, yana ba da bayanan farko game da tsarin kwayar halittar da kuma tsarin koma da kuma tail formation. Wadannan lura sun goyi bayan wasu tsinkayen tsinkaye game da ginin comet, musamman ma Fred Whipple "dirty snowball" model, wanda ya yi daidai da cewa Halley zai kunshi cakuda kankara mai narkewa kamar ruwa, carbon dioxide, da ammonia da ƙura. Ayyukan sun kuma ba da bayanan da suka sake fasalin waɗannan ra'ayoyin; alal misali, yanzu an fahimci cewa farfajiyar Halley ya ƙunshi ƙura, kayan da ba su da ƙarfi, kuma cewa kawai ƙaramin ɓangaren shi ne. Tambaya: Menene sunan kankara na farko da aka gani ta hanyar sararin samaniya?
Tauraron Halley