They do disturb the Earth's ionosphere, however, which in turn disturbs radio communications. Along with energetic ultraviolet radiation, they heat the Earth's outer atmosphere, causing it to expand.

Solar Flares Can Cause Radio Blackouts on Earth\n\n When a strong enough flare occurs, charged electrons in the upper atmosphere can temporarily disrupt radio waves on the side of Earth that is facing the Sun, either degrading or completely absorbing them.

MC3 is offline but MC Versus isn't... Download and play MC4 or MC5 if you haven't..

Modern Warfare III Multiplayer offers over a dozen Multiplayer game modes played on Core maps and the larger Ground War maps. For an inside look plus tips on every game mode, see the Game Modes portion of the Modern Warfare III guide.