Labels:bulletin board | daily | encyclical | fence | pier | pole | poster | rock | sea | sidewalk | sky | skyscraper | water OCR: no 1081E Ras everything else in agal isbound gravity orbit around the galaxy The rotational speed the rapidly in the inner por galaxy peakingat about lius kilometers per second er 10,000 light vears frorm Bevond this radius the more slowly all the wa edge of the HI disk 40,0 these years frorm the nucleus can rotational speeds astron ust be deduce how much matt curves in the galaxy "Flat" rot xies like this indicate +1 er must have large halos matter that extend well their observed edges TTKE rises kingat abou kilorneters iter ilight oits from astro
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