Multiple realities
(covers information from several alternate timelines)

The explosive decompression that killed Lieutenant Branson

An airlock on the USS Voyager undergoing explosive decompression

Explosive decompression is a violent, sudden drop in ambient air pressure that occurs within one tenth of a second when in space.

Opening, disabling, or the failure of the containment fields around airlocks and external hatches, such as those found in shuttlebays and cargo bays, or a major hull breach while in any environment of substantially lower pressure, will result in an explosive decompression. Decompressing the main shuttlebay aboard a Galaxy-class starship would cause a reaction sufficient enough to move the ship. (TNG: "Contagion", "Disaster", "Cause and Effect")

In 2154, Enterprise NX-01 lost several crew members, including Jane Taylor, to an explosive decompression during the Battle of Azati Prime. (ENT: "Azati Prime", "Damage")

In 2233 of the alternate reality, at least one USS Kelvin officer was blown into space through a hull breach during a battle with the Narada. (Star Trek)

In 2256, at the Battle of the Binary Stars, Ensign Danby Connor was killed when a hull breach on the USS Shenzhou caused explosive decompression of the brig. As her cell forcefields began to fail, Commander Michael Burnham used explosive decompression as a means to propel herself towards the habitable area of the ship, saving her life in the process. (DIS: "Battle at the Binary Stars")

The next year, two USS Discovery crew members were blown into space when the ship's hull was breached during the Battle near Xahea. Georgiou, Commander Nhan and Control inside Leland's body, who had been engaged in hand-to-hand combat in that corridor, managed to hold on until an emergency bulkhead closed and sealed the breach. (DIS: "Such Sweet Sorrow, Part 2")

In 2259, the USS Vengeance caught up with the USS Enterprise mid-warp and fired at the starboard section of the engineering hull, breaching the bulkhead and blowing out several crewmembers. A while later, Montgomery Scott opened the airlock in Hanger 7 aboard the Vengeance to allow access for James T. Kirk and Khan Noonien Singh. A Section 31 security officer was blown into space as a result. (Star Trek Into Darkness)

In 2263, the Enterprise was destroyed by Krall's army of swarm ships above Altamid as they violently tore through both hulls in various sections, blowing out countless crewmembers into space. (Star Trek Beyond)

In 2364, the bridge crew of the SS Tsiolkovsky, who were suffering from polywater intoxication, opened an emergency hatch and were blown out into space. Commander William T. Riker had initially indicated that they were "sucked out" into space before being corrected by Lieutenant Commander Data, stating that Riker's comment was a "common mistake". (TNG: "The Naked Now")

In 2367, the USS Enterprise-D attempted to remove Junior from its dorsal section by depressurizing Shuttlebay 2. The explosive decompression failed to dislodge the alien baby though. (TNG: "Galaxy's Child")

That same year, after the Enterprise-D began experiencing strange subspace phenomena inside a nebula, Captain Jean-Luc Picard ordered a course out of the nebula at warp one. This resulted in an explosive decompression on deck 37. (TNG: "In Theory")

In 2368, the USS Enterprise-D decompressed its main shuttlebay in order to avoid a collision with the USS Bozeman. (TNG: "Cause and Effect")

One of Dukat's duties, when he was a Glinn serving aboard the Cardassian starship Kornaire, was to clean out a compartment where three men had been killed by explosive decompression. In 2374, he told Benjamin Sisko that "I didn't sleep for a week after that". (DS9: "Waltz")

In 2372, USS Voyager experienced an explosive decompression on deck 15 which killed Ensign Harry Kim. (VOY: "Deadlock")

While in command of Voyager in 2374, Chakotay ordered an explosive decompression to kill the Borg in Cargo Bay 2. Only one drone, Seven of Nine, survived. (VOY: "Scorpion, Part II")

During the Battle of the Bassen Rift in 2379, the Reman warbird Scimitar launched a volley of photon torpedoes at the USS Enterprise-E's bridge, resulting in an explosive decompression which killed Lieutenant Branson. (Star Trek Nemesis)

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