Mjolnir can be used both offensively and defensively.
Described as impacting with sufficient force to "destroy mountains,"[41] with only primary adamantium proving too impervious.[42] Other offensive capabilities include creating vortices and forcefields (capable of containing an explosion that could potentially destroy a galaxy);[43] emitting mystical blasts of energy; controlling electromagnetism; molecular manipulation;[44] and generating the Geo-Blast (an energy wave that taps a planet's gravitational force),[45] Anti-Force (energy created to counter-act another force),[46] the thermo-blast which can even challenge such beings as Ego the living planet,[47] and god Blast (a blast that taps into Thor's life force).[48] The hammer can travel through planets to return to Thor.[49] It can even create antimatter particles[50] and whirling it round can create wind powerful enough to lift the Taj Mahal.[51]
There are also other several rarely used abilities. Mjolnir can track a person[52] and mystical items;[53] absorb energy, such as draining the Asgardian powers of the Wrecking Crew into the Wrecker;[54] or detect illusions, as Thor once commanded the hammer to strike the demonic Mephisto, who was hiding amongst false images of himself.[55] As a former religious relic, Mjolnir is lethal to the undead, causing creatures such as vampires to burst into flame and crumble to dust.[56] Mjolnir also can project images, as Thor shows a glimpse of Asgard to fellow Avenger Iron Man.[57] It is near-indestructible, surviving bullets,[58] Anti-matter,[59] and the Melter's melting beam.[60]
The hammer has two properties relating to movement. When it is deliberately thrown by Thor, it will return to his hand despite any intervening obstacles or distance, even traveling through planets to return to Thor.[49] When it is dropped or set aside, it takes a fixed position, from which it cannot be moved except by a 'worthy' individual.[61]
The hammer has also drained energy from the radioactive supervillain called the Presence, who is forced to surrender before being killed.[62] Mjolnir was able to absorb, contain, and direct the energy of a Null Bomb, which was powerful enough to destroy an entire galaxy.[63] Mjolnir also causes a side effect when used against the hero Union Jack: when Thor erroneously attacks the hero with a blast of lightning and then cancels the offensive, Union Jack is accidentally endowed with the ability to generate electricity.[64] The hammer has been used to both power an Atlantean warship[65] and temporarily drain the forcefield of the villain Juggernaut.[66] If someone swears on the hammer their spirit can be summoned up after death.[67] As well as absorbing radiation, the hammer can repel it back.[68]