or across continents, and he has displayed superhuman speed. Exposure to radiation has also been shown to make the Hulk stronger. It is unknown how he gains biomass during transformation but it may be linked to the One-Below-All. His durability, regeneration, and endurance also increase in proportion to his temper. Hulk is resistant to injury or damage, though the degree to which varies between interpretations, but he has withstood the equivalent of solar temperatures, nuclear explosions, and planet-shattering impacts. Despite his remarkable resiliency, continuous barrages of high-caliber gunfire can hinder his movement to some degree while he can be temporarily subdued by intense attacks with chemical weapons such as anesthetic gases, although any interruption of such dosages will allow him to quickly recover. He has been shown to have both regenerative and adaptive healing abilities, including growing tissues to allow him to breathe underwater, surviving unprotected in space for extended periods, and when injured, healing from most wounds within seconds, including, on one occasion, the complete destruction of most of his body mass. His future self, the "Maestro", was even eventually able to recover from being blown to pieces. As an effect, he has an extremely prolonged lifespan. He also possesses less commonly described powers, including abilities allowing him to "home in" to his place of origin in New Mexico; resist psychic control, or unwilling transformation; grow stronger from radiation or dark magic; punch his way between separate temporal or spatial dimensions; and to see and interact with astral forms. Some of these abilities were in later years explained as being related; his ability to home in on the New Mexico bomb site was due to his latent ability to sense astral forms and spirits, since the bomb site was also the place where the Maestro's skeleton was and the Maestro's spirit was calling out to him in order to absorb his radiation. He is also shown to have a separate memory to Bruce Banner - when Spider-Man has the knowledge of his secret identity erased during Spider-Man: One More Day, the Hulk later asks how Peter is doing, not Spider-Man; upon questioning, he enigmatically states "Banner forgot. But I don't forget." In the first Hulk comic series, "massive" doses of gamma rays would cause the Hulk to transform back to Banner, although this ability was written out of the character by the 1970s. Supporting characters Over the long publication