Astronomers never know exactly what to expect when they point a telescope in a specific direction -- and sometimes what they see is completely unexpected.
원문출처 : https://www.cnn.com/2019/08/13/world/milky-way-black-hole-scn-trnd/index.html
원문출처 : https://www.cnn.com/2019/08/13/world/milky-way-black-hole-scn-trnd/index.html