... Incredibly gamma-ray bursts, sudden flashes of radiation with over 100,000 times the energy of visible light photons, occur several times a day. M32: Blue Stars in an Elliptical Galaxy . ... Elliptical galaxies are known for their old, red stars. ... The Rotten Egg Planetary Nebula . ... Its spidery appearance is responsible for its popular name, the Tarantula Nebula, except that this tarantula is about 1,000 light-years across, and 165,000 light-years away in the southern constellation Dorado. ...