The NASA "Virtual Observatories" provide a variety of information and tools related to data from subdiscipline "x."
| VHO | Virtual Heliospheric Observatory |
| VMO | Virtual Magnetospheric Observatory |
| VITMO | Virtual ITM (Ionosphere Thermosphere Mesosphere) Observatory |
| ViRBO | Virtual Radiation Belt Observatory |
| SuperMAG | SuperMag |
| Virtual Model Repository | Virtual Model Repository |
| VEPO | Virtual Energetic Particle Observatory |
| VWO | Virtual Wave Observatory |