这种刀具使用“宇宙时代”的土星合金制成，该种材料由大山脉研究开发中心研制，号称在研磨之后能够达到极致的锋利，并且绝不会崩刃或是磨钝。有一批这样的刀具被送往马德雷山脉赌场的厨房in preparation for the Gala Event。虽然它们确实轻巧耐用，但是它在研发时所宣称的一个优点在实际使用中却过了头——它太过锋利了，以至于随随便便就能把不小心的使用者划出一道大口子，在赌场的终端中甚至这样记录到“因为误伤到自己的人实在太多，现在连擦血的抹布都不够用了”。在更加极端的情况下，甚至有厨师在用力的时候一不小心把砧板也一起划破的例子出现。因此对这种刀具大量地出现在这里是否必要以及安全的疑问和关注也日渐增长，但弗雷德里克·辛克莱尔坚持说赌场应当使用最高级的设备。
|“||The alloy that makes up the Pre-War kitchen knives is unknown, and seems to have decayed in contact with the toxic cloud.||”|
Compared to the regular kitchen knife, the cosmic knife deals more damage and has a longer blade stained red 由于红雾 residue. 这种锋利的武器对肢体有50%的额外伤害加成。如果用上一些阿伯莱萨清洁剂，它会变成清洁的宇宙餐刀，伤害变得更高。They glow purple before they are cleaned, most likely due to years of cloud exposure. "宇宙餐刀”这个名字来自于“太空时代”这个品牌用的土星合金材料，并非是真正用太空材料制作而成的。
It is possible to execute Back Slash outside of V.A.T.S. (without the required Melee skill of 50 to perform the move) by initiating a power attack (hold attack button) while moving forward.
The cosmic knife can successfully strike about 745 times from full condition before breaking.
- One can be found stabbed into a cutting board in the Villa Police Station.
- One can be found stabbed into a bed next to an assassins suit in the Villa Clinic.
- There are three to four on worktops in the kitchen in the Sierra Madre Casino.
- Many can be found in desks in the rooms on the top floor of the Villa Clinic
- One can be found in the kitchen of the executive suites in the Sierra Madre Casino.
- One can be found right next to the exit from the Villa to the Mojave, next to 1 Sierra Madre chip.
- One can be found in the eastern part of the Villa. It is located in the Gift shop on a display rack next to a cosmic knife advertisement.
- One can be found in a cafe with a radio in Salida del Sol courtyard next to a cutting board.
- Two can be found in Cantina Madrid on or next to a cutting board.
- Despite being developed at Big MT, none can be found there.
- It was used to cut open hazmat suits that had their locks corroded by the red cloud in the Sierra Madre.
Behind the scenes
Shape and texture resources for the cosmic knife, its clean, and super-heated variant are all present in the files of Old World Blues add-on, but not used. Though present, no objects in the add-on use these resources. Curiously the resources are stored within the nvdlc01 folder used by the Dead Money add-on, rather than the nvdlc03 folder allocated to Old World Blues.