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Yor Ub. Colonel Powle wees e bare Subj: Anenalons Lumincous Phenomena (Seventh Repor4) hay 25, 1950 to move horizontally. sovever, a striotd: vertical in’.1ll is also very rarely observed in the case of cenuinc neteor falls. 5. fn analysis just compieted of the time distrip-tion of the sreen fireballs so far observed pernitse us to add an lith iter: te the lists of adifferencés given in neracraph 1] above, The prarh of frequency versus local time which ascoipanies the present repert shows tist the maxi:um ts (occurring at approximately frequency maximum for ordiasry meteors (occurrin: at appronimatety 9209) nor the freavency maximum for meteorite falis (occurrine at arrroximntely 1600), a 4, Inspection of the prarh referred to in verarreph 2 also will shov that most of the creen Sirchalis have been sirhted in a time inter-= val extendine from Bboub 5 pom. to ll pam. (MST), This concentration micht be even more proneunced if it were possible to sercen out of the seconder: maximum, aroun! 2 asm. (IGT), al) ordinary metcors which have beon mistalkanly identified es mercer firchalls, Yhat such misidentificas tion has occurrce is strony sugecstcd by the near coincidence in time of the sccondary sextium cf the ercen Sirchalls enc the well osta>lished carly mornin: maximum of the oscinary vecteors, 5. Soi sipnifiranece mar attach to the fact thac the tine interval elludod to in para-ranh 4 exten ’s from about 7 a.n. to 1 pam. in the Ural region of th: USSR, Since missiles mevine with velecitics of the order of these found for tas mreen firchslle for which rcal peth detcrainotions have been rossible vould travel from the southern Urals to Hew Hexico in tess than 15 minutes, 9 possible interrretation of the concentration of sightings rcferred te in paratreach 4 is thet the e«reen fireballs result from suided missilcs leamehed from bases in the Urals in the mornin> heurs before cloudiness duc to convection er blindine afternoon dust storns car interfere with nonersdar tracking, such as has becn used by the Cptical Trajeetor: Scctien at White Sands Provine Ground. 6 There is else a sronevnecs concentraticn of green firckall incideonts-on the four dave, “riday, Saterday, Sunday, Tiondsy, almost all of the most widely obscrved incidents having ocevrr-d on Saturday or Sunday, Ve It is a curious and fairly well-cstablished fact thet there has been a distinet decline in the ner of gpreon fireball sightines | during the last two months, within whies the number of so-called "fly- ing saucer" incidents in this region uns attained an all-time high. 8. Althoucit Toinve reeantly reecive } from vr, dosenh Eaplan of the Scientific swdvisory Berrd a Jeticr coninining tie stetomo:t “Vrani:hy, I don't Imo of-am 0, 8, enneritnents the vould result ip tho appearnnee of these unconventional ob jecta, rmrdoncitiher docs Von kearman", I still ~ TTT AN vf . I t yy LY | [er ° . . 7 , eee ad el ee