... The light from young energetic stars is slowly transforming the Pelican's cold gas to hot gas, with the advancing boundary between the two known as an ionization front. The Coma Cluster of Galaxies . ... Each of these galaxies houses billions of stars - just as our own Milky Way Galaxy does. ... Is the Moon larger when near the horizon? ... A spectacular bridge of stars and gas stretches for nearly 250,000 light-years and joins this famous peculiar pair of galaxies cataloged as Arp 295. ...