PASADENA >> Astronomers from Caltech have discovered a previously unknown variety of rare, ultra-massive spiral galaxies dubbed "super spirals" that are causing them to rethink the scale of the universe.
With as much as 10 times the mass of the spiral galaxy we call home, the Milky Way, and up to 14 times brighter, the arms of the newly-discovered galaxies can span 440,000 light-years, dwarfing the 100,000 light-year diameter of our own galaxy, JPL spokesman Adam Hadhazy announced Thursday in a
