... Unexpected Comet Pojmanski Now Visible . ... Comets bright enough to be visible to the unaided eye appear only every few years. Right now, however, a new comet has brightened unexpectedly and is visible as a faint streak to the unaided northern observer in the eastern morning sky just before sunrise. ... The Galaxy Within Centaurus A . ... The bright star.. ... A closer look at the Eagle Nebula, however, shows the bright region is actually a window into the center of a larger dark shell of dust. ...