Labels:bulletin board | encyclical | fence | pier | pole | sea | sky | skyscraper | water OCR: astronom ical phenomer binary system corm iposec vely companion obiects, one dense normal the other increc The nommal star has abo times the mass of ours companion has a Iass equal to our Sun's sbutit wider than a medium-s Although the systerm ars)it away (roughly 16,000 lig kind is still the closest object to Earth about Astronomers unce the exact nature of the member of SS433 (it ma neutron star or a black the curren estimates sugges now forner) They do howe phenone systern commuose objects lense nomma tirmes Imass rmiass buti medi closesi obiect Fartl cunen sugge fomer