Current scientific antimatter knowledge is incomplete. Without full knowledge it's not possible to invent antimatter based applications, including the application handled in this paper, antimatter bomb. Word bomb combined with nuclear phenomena has an enormous stigma, so even talking about the theoretical aspects (scope of this paper) of antimatter bomb sounds horrible, not to mention designing and constructing such a thing. Why would we even need antimatter bomb? Without antimatter based bomb we, as the mankind, are helpless in front of a possible devastating asteroid impact. No other means are capable of generating enough destructive power to wipe out an asteroid. Many dangerous asteroids cruising in space are not known to astronomers today hence no early warnings possibility. Especially in case of these surprising asteroids, antimatter bomb is the only way to prevent imminent disaster. As in case of every technology there is a potential for misusing antimatter bomb. The greatest threat is intentional or accidental large enough annihilation chain reaction which could lead to a total annihilation of our planet. Probability and prevention of such unfortunate event requires additional research.