| Acronym | Meaning |
| EOS | Earth Observing System |
| ENSO | El Nino/Southern Oscillation |
| SETI | Search For ExtraTerrestrial Intelligence |
| BH | Black Hole |
| CD-ROM | Compact Disk Read-Only Memory |
| MBB | Messerschmitt-Belkow-Blohm |
| IRFNA | Inhibited Red Fuming Nitric Acid |
| VVS | Voenno-Vosdushniye Sili |
| GSFC | Goddard Space Flight Center |
| SST | Spectroscopic Survey Telescope / SuperSonic Transport |