| Acronym | Meaning |
 | ISY | International Space Year |
| FWHM | Full Width At Half Maximum |
| EUVE | Extreme UltraViolet Explorer |
| MRSR | Mars Rover And Sample Return |
| NASM | National Air And Space Museum |
| IOC | In-Orbit Checkout And Calibration |
| NRSC | National Remote Sensing Centre |
| M | Messier |
| ATM | Amateur Telescope Maker |
| OTHB | Over The Horizon Backscatter |
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