The Xbox version said, "First "Halo", now this". This violent collision formed most of the galaxy's (metal-rich) galactic halo and extended disk. It can be found with a halo or celestial light. Bungie began developing "Halo 3" shortly after "Halo 2" shipped. Cortana intervenes to prevent the activation of Halo. The seven rays form a halo or aureole. Cortana is featured in a variety of "Halo" merchandise. Microsoft planned for "Halo 2". For "Halo 5", Cortana's appearance changes significantly. Christ began to be shown with a plain halo. Their approach was to build upon the foundation established with "Halo Wars". The laser enters a cloud cover and measures the thickness of the return halo. Gravemind is one of the primary antagonists of "Halo 3". It featured five web servers containing various media files related to the "Halo" universe. The discovery of nerves growing everywhere like a halo around the tumor cells was surprising.