- Suchmergerscangenerateaquasarphaseofgalacticevolution.Olderstarsresideinthebulgeatthecenterofthegalacticdisk.Betterstatisticsmighthelptoshedlightonthenatureofgalacticevolution.TheSloanGreatWall,avastgalacticfilament,isthelargestknownstructureintheUni...
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- Partlyobscuredbyforegrounddust,thenebulaitselfsurroundsNGC1893,ayounggalacticclusterofstarsthatenergizestheglowinggas.Theringmayhavebeenformedwhentwogalacticclusterscollided.Overtheensuingeons,matterorganizeditselfintobodiesofincreasinglylargesize:su...
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- 1、Indeed,Chengexpectsthattheenergyoftheshockfrontatthegalacticcentreisnearly100timesgreaterthanthatcreatedbyasupernovaexplosion.2、Weknowthattheyexistfromtheimpacttheyhaveontheirsurroundings:causingnearbystarstoorbitgalacticcentresatbreakneckspeeds,...
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- Thegalacticcenterandanticenteraredirectlyoppositeoneanotheronthegalacticequator–thegalacticplaneprojectedontothesky'sdomeorstellarsphere.AsseenfromEarth,themooncrossedthegalacticequatorlastnight.WhenthemoonexitsTaurustoenterGemini,themoonappearstoc...
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- Thebest-knownshape-shiftingprocessisgalacticcannibalism:mergingwithaneighborcanturnanorderlyspiralintoamessy,beehivelikeellipticalgalaxy.ThisgalaxywasgobbledupbytheMilkyWaybetweensixandninebillionyearsagoinanactofintergalacticcannibalism....
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