Item #: SCP-XXXX

Object Class: Euclid

A specimen of SCP-XXXX pre-containment.

Special Containment Procedures: All 93 instances of SCP-XXXX are to be collectively contained in a small hermetically-sealed metal container, capable of withstanding significant internal negative pressure (see attached documents for full specifications). This container is to maintained at negative pressure of at least 25 Pa and cooled with cryogenic liquid circulation so as to never exceed -90° celsius. The room that this container is within (currently containment chamber 19 at Bio Research Site-104) is to be fitted with advanced heat insulation and an emergency freeze mechanism to be used in the event of containment breach. Conversely, specimens of SCP-XXXX-1 must be contained in a low-security acrylic glass specimen box an adjacent room to SCP-XXXX (currently containment chamber 18 at Site-104).

Every two weeks, 4 cm3 of pure hydrogen (H 2 ) must be pumped directly into SCP-XXXX's containment chamber. Every four days, small amounts of moss, one tardigrade of any other species, and a bacterial sample are to be placed in SCP-XXXX-1's containment chamber.

Requests filed for experimentation should be directed to Dr. Tourniquet and require at least a Level 2 3 security clearance. Report minor containment incidents to containment specialist Ackerman.

Description: SCP-XXXX refers to an extranormal space-inhabiting species of tardigrade , also known by its taxonomical binomial nomenclature Thermozodium stellae (see attached documents for full hierarchical classification).

SCP-XXXX will consume the element hydrogen, and through a largely mysterious process similar to nuclear fusion that occurs during stellar nucleosynthesis, it is able to produce large amounts of energy as well as helium. If hydrogen cannot be found, T. stellae will begin to consume helium and subsequently convert it into lithium. If no helium can be found, then it will consume lithium. The organism may continue to consume each heavier element, however it has been shown by the findings of Researcher Nesbitt that elements of larger atomic weights subtract from SCP-XXXX's lifespan exponentially. Additionally, tests have confirmed that SCP-XXXX prefers lighter elements over heavier ones.

The organism has shown peerless resistance to extreme environmental stress far beyond the capabilities of other known species of tardigrade. Radiocarbon dating tests have ascertained that most of the specimens of SCP-XXXX are ~1500 years of age, compared to other known tardigrade species which have an average lifetime of about a year.

Recovery Log XXXX-A: The Foundation became aware of SCP-XXXX when astronomical anomaly sensors attached to the ███-6 telescope detected a minor blip of carbon life. Using unmanned remote-controlled probes, the object was successfully detained into Foundation custody eighteen months later. The object in question was an asteroid, primarily composed of iron and copper rock, but most notably it harbored approximately ninety living specimens of SCP-XXXX. This asteroid is referred to as SCP-XXXX-1 (see addendum XXXX-B).