| Acronym | Meaning |
 | SOFIA | Stratospheric Observatory For Infrared Astronomy |
| AIPS | Astronomical Image Processing System |
| HOTOL | HOrizontal TakeOff And Landing |
| NSSDC | National Space Science Data Center |
| GSC | Guide Star Catalog |
| AAS | American Astronomical Society |
| AIRS | Atmospheric Infrared Sounder |
| TDT | Terrestrial Dynamic Time |
| NIST | National Institute For Standards And Technology |
| IDA | International Dark-sky Association |
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