Thor possesses a variety of superhuman attributes in the Marvel comics. His powers include superhuman strength, with the upper limits of his strength being unknown. Thor also has control over the base elements of a storm, allowing him to create electrical storms, hurricane-force winds, tornadoes, and torrential rains. He can also stop any of these weather conditions. Thor is immune to the effects of lightning and electricity. He possesses superhuman speed, capable of moving at speeds up to 115 miles per hour, and can fly at light-speed via his divine hammer, Mjolnir. Thor also has superhuman stamina and the ability to manipulate vast amounts of energy. He can channel the storm’s energy into powerful blasts and can even create rays powerful enough to kill immortals. Thor's skin, muscle, and bone tissues have several times the density of the same tissues in a human being, contributing to his superhuman weight and making him invulnerable to many forms of damage.