Covenant Bomb

The Covenant Bomb was a type of large tactical ordnance. They were the counterpart to the UNSC's tactical nuclear weapons.

Bombs were used during the First Battle of Earth to assault Orbital Defense Platforms. Boarding parties delivered the ordnance and destroyed Athens Station and Malta Station. The device on Cairo Station was secured by John-117 and Cortana. The Spartan performed a micro-gravity manoeuvre to deliver the device to a Covenant Assault Carrier. The enemy warship was destroyed.

Technical Details
The Covenant Bomb is about 2 meters long, 1 meter high and is covered in very large spikes that keep the bomb in place. These bombs are equipped with timers on their detonators and contain antimatter. Antimatter is extremely unstable, any contact between destabilized antimatter and normal matter causes an instant, massive explosion of gamma rays. However, it is unknown how the antimatter is contained, because if the container was normal matter, it would simply detonate instantly, while if it was antimatter, it would explode on contact with outside normal matter.

These bombs are a larger version of the Antimatter Charge. The Covenant carry these on their ships, likely for use by the ships' Elite Rangers. They are capable of destroying entire ships and even space stations, an example being the MAC stations above Earth.

Trivia

 * Jason Jones of Bungie referred to the bomb as the "Giant Covenant Space Pickle".
 * When the bomb is reactivated by John-117 it takes 7 seconds to explode.
 * It appears in Halo Zero, a fan-made 2D Halo game made for the PC.