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Astronomija - opšta tema


Jolly Roger

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I won’t pretend I haven’t heard it before: Voyager 1 has left the Solar System! Usually followed soon after by: um, no it hasn’t. And while it might all seem like an awful lot of flip-flopping by supposedly-respectable scientists, the reality is there’s not a clear boundary that defines the outer limits of our Solar System. It’s not as simple as Voyager rolling over a certain mileage, cruising past a planetary orbit, or breaking through some kind of discernible forcefield with a satisfying “pop.” (Although that would be cool.)

Drugim rečima: ili nije još, ili je izašao još prošle godine :lolol:
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Ako u92 tako kaze, onda mora da jeste...Nije prvi put da se proglasava izlazak Vojadzera 1 izvan Suncevog sistema, mada brojimo sitno i uskoro bi i zaista mogli da udarimo u fanfare... Ali kad ce to uskoro, niko ne zna. Ako su Vojadzeri (i Pioniri, naravno), nesto pokazali, to je da je nas Suncev sitem ipak malkice komplikovaniji nego sto smo mi ucili u skoli, a njegove granice su poput srpskih, neuhvatljive... Niko ne zna gde S.S. pocinje a gde zavrsava. U teoriji je lako, Vojadzer ce izaci u intestelarni prostor onog momenta kada suncev vetar pocne da "udara" o zid interstelarnih cestica, odnosno, kada Vojadzer s talasa jadranskog mora S.S uplovi u Sredozemno more medjuzvezdanog prostranstva. Al' cik utvrdi koji "talas" pripada jadranu a koji sredozemlju...pocetkom 2011:540752main_pia14112b-43_946-710.jpg

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  • 4 weeks later...

Ekspedicija 36 (Vinogradov, Misurkin, Cassidy) se vrnula posle 166 dana u ISSu.201309110001hq.jpgEkspedicija 38 (Kotov, Ryazansky, Hopkins) ide gore 26, septembra.ISS trenutno "čuva" Expedition 37 (Yurchikhin, Nyberg, Parmitano).

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A kakav je to oblak prašine "viđen" na Mesecu pa su pre neki dan hitnuli sondu "zaobilaznim putem"?
Ako misliš na LADEE-ja, nije on još ni krenuo ka Mesecu. Trenutno je u prvoj od tri orbite oko Zemlje (ta faza traje 24 dana) i tek onda kreće ka Mesecu, do koga će putovati 5 dana.Kad stigne gde je pošao (ugrubo 6. oktobar), gnezdiće se naredna tri dana, dok ne uđe u željenu orbitu oko Meseca.Minimum goriva, maksimum iskorištenja gravitacije.Što se tiče prašine, zato su ga i napravili - da ispita kretanje prašine u tankoj Mesečevoj atmosferi.
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Ma da, nego nisam nalazio ranije da su najavljivali ovu misiju, a po novinskim natpisima je izgledalo da su maltene na brzinu poslali ovu sondu jer su na površini Meseca uočili oblak prašine i nekakvu svetlost.

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Ako misliš na LADEE-ja, nije on još ni krenuo ka Mesecu. Trenutno je u prvoj od tri orbite oko Zemlje (ta faza traje 24 dana) i tek onda kreće ka Mesecu, do koga će putovati 5 dana.Kad stigne gde je pošao (ugrubo 6. oktobar), gnezdiće se naredna tri dana, dok ne uđe u željenu orbitu oko Meseca.Minimum goriva, maksimum iskorištenja gravitacije.Što se tiče prašine, zato su ga i napravili - da ispita kretanje prašine u tankoj Mesečevoj atmosferi.
Lada nam ponela na Mesec i dodatni prtljag: Zabac u Svemiru!frog-LADEE-launch-9-6-2013.jpg
Sinoć BBC i zvanično potvrdio izlazak Vojadžera iz našeg sistema.
nasa
Stone discussed with the Voyager science group whether they thought Voyager 1 had crossed the heliopause. What should they call the region were Voyager 1 is?"In the end, there was general agreement that Voyager 1 was indeed outside in interstellar space," Stone said. "But that location comes with some disclaimers - we're in a mixed, transitional region of interstellar space. We don't know when we'll reach interstellar space free from the influence of our solar bubble."So, would the team say Voyager 1 has left the solar system? Not exactly - and that's part of the confusion. Since the 1960s, most scientists have defined our solar system as going out to the Oort Cloud, where the comets that swing by our sun on long timescales originate. That area is where the gravity of other stars begins to dominate that of the sun. It will take about 300 years for Voyager 1 to reach the inner edge of the Oort Cloud and possibly about 30,000 years to fly beyond it. Informally, of course, "solar system" typically means the planetary neighborhood around our sun. Because of this ambiguity, the Voyager team has lately favored talking about interstellar space, which is specifically the space between each star's realm of plasma influence.
:naughty:Salu na stranu, izgleda da smo stigli negde ovdeKrimigis-1pia16483-43.gifZbogom ostaj, Putnice, i mahni malim zelenim kad za nekih 40 000 godina prozujis pored prve zvezde, Gliese 445...golden_rec_sidebar.gifI za kraj:Ovde Radio-Vojadzer. Slusate nas na Veoma Dugim Talasima od 2,3GHz, 8,45GHz i 32,3GHz:PIA17047_ip.jpgRadio-signal sa Vojadzera, uhvacen na radio opservatoriji VLBA. Signal sa Vojazdera zraci snagom od 22 vata (snaga friziderske sijalice), ali je u poredjenju sa okolnim radio izvorima vise nego mocan, sto se iz prilozene slike i da videti.
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