Battle of Giant Windy Stars 0 Randall Gross ScienceOctober 2012Saturday, October 13, 2012 at 6:30 pm PDT • Views: 1,139 Video Binary Nature Cygnus OB2 Fierce Stellar Winds Giant Windy Stars Humongous Stars Intense Ultraviolet Light Radio Signals Stellar Winds X-ray X-Ray Flux X-Ray Observations Stars Stellar Titans O-Type Star Optical Spectrum Hot Stars Massive Star