| Dark Matter Features | Interstellar H at 1 atom/cm3 | CDM |
| Cold (i.e., low velocity) | CMB Equilibrated | C |
| No Emissions (i.e., dark) | Ground State | GS |
| Collisionless (i.e., low cross-section) | Interstellar/Sparse | IS |
| Baryon Expected | Atomic Hydrogen | A |
| Mass-Energy less than 3 GeV | 0.938 GeV Neutral H | H |
| Dark Matter M20kpc 635 Billion Mʘ | 689 Billion Mʘ |
|
| Central DM Heating (“coring”) | Loses Ground State |
|
| CMB Decoupling at Dawn | W-F Effect |
|
| Structural Scaffold | Most Abundant Atom |
|
| Existence at CMB Emission | Most Abundant Atom |
|