Henize 70, a luminous superbubble of interstellar gas about 300 light-years in diameter and blown by winds from hot, massive stars and supernova explosions, is located in our neighborin...
NGC 6559 is an emission nebula, a star forming region that lies about 5000 light-years away from Earth, just east-northeast of its much more famous neighbor, the Lagoon Nebula (Messier ...