| cosmic microwave background | CMB | 260 | 15 | 2.002761 | 9807274,9807020,etc |
| active galactic nucleus | AGN | 152 | 14 | 2.002781 | 9807053,9807317,etc |
| gamma ray burst | GRB | 534 | 14 | 2.008061 | 9807262,9807070,etc |
| cold dark matter | CDM | 290 | 14 | 2.001784 | 9807020,9807225,etc |
| interstellar medium | ISM | 105 | 12 | 1.002128 | 9807126,9807048,etc |
| star formation rate | SFR | 415 | 12 | 2.004201 | 9807188,9807262,etc |
| spectral energy distribution | SED | 74 | 12 | 2.001761 | 9807201,9807335,etc |
| point spread function | PSF | 99 | 11 | 1.000974 | 9807053,9807126,etc |
| initial mass function | IMF | 73 | 10 | 2.00066 | 9807022,9807079,etc |
| large magellanic cloud | LMC | 143 | 9 | 2.002599 | 9807163,9807350,etc |
| hubble space telescope | HST | 83 | 9 | 1.001781 | 9807242,9807291,etc |
| supernova | SN | 303 | 8 | 2.008297 | 9807292,9807271,etc |
| luminosity function | LF | 32 | 7 | 1.000642 | 9807070,9807138,etc |
| broad line region | BLR | 54 | 7 | 2.001665 | 9807317,9807191,etc |
| nasa/ipac extragalactic database | NED | 61 | 7 | 1.001061 | 9807317,9807263,etc |
| horizontal branch | HB | 56 | 6 | 2.000904 | 9807152,9807222,etc |
| eso imaging survey | EIS | 109 | 5 | 2.000582 | 9807336,9807156,etc |
| big bang nucleosynthesis | BBN | 79 | 5 | 2.002798 | 9807126,9807004,etc |
| optical transient | OT | 85 | 5 | 2.001281 | 9807262,9807069,etc |
| small magellanic cloud | SMC | 114 | 5 | 2.003949 | 9807163,9807350,etc |
| center of excellence | COE | 5 | 5 | 1.000061 | 9807022,9807016,etc |
| intergalactic medium | IGM | 65 | 5 | 2.001577 | 9807070,9807292,etc |
| cosmic microwave background radiation | CMB | 53 | 5 | 1.000876 | 9807225,9807312,etc |
| full width at half maximum | FWHM | 22 | 5 | 1.001934 | 9807245,9807143,etc |
| equivalent width | EW | 57 | 5 | 1.001738 | 9807244,9807187,etc |
| ultraviolet | UV | 69 | 5 | 2.001011 | 9807273,9807187,etc |
| space telescope imaging spectrograph | STIS | 59 | 5 | 1.002287 | 9807195,9807212,etc |
| international ultraviolet explorer | IUE | 59 | 4 | 1.002521 | 9807343,9807283,etc |
| james clerk maxwell telescope | JCMT | 41 | 4 | 2.000916 | 9807201,9807245,etc |
| national radio astronomy observatory | NRAO | 8 | 4 | 1.000221 | 9807274,9807115,etc |
| intracluster medium | ICM | 86 | 4 | 1.005321 | 9807003,9807022,etc |
| all sky monitor | ASM | 22 | 4 | 2.000701 | 9807281,9807071,etc |
| field of view | FOV | 22 | 4 | 1.000799 | 9807342,9807303,etc |
| low surface brightness | LSB | 40 | 4 | 2.000376 | 9807232,9807010,etc |
| very large array | VLA | 51 | 4 | 2.001322 | 9807245,9807125,etc |
| smoothed particle hydrodynamics | SPH | 108 | 4 | 1.002957 | 9807290,9807059,etc |
| far infrared | FIR | 150 | 4 | 2.00287 | 9807187,9807263,etc |
| hubble deep field | HDF | 136 | 4 | 2.001063 | 9807140,9807147,etc |
| european southern observatory | ESO | 26 | 4 | 1.000327 | 9807283,9807325,etc |
| cosmic ray | CR | 32 | 3 | 2.001634 | 9807126,9807342,etc |
| local thermodynamic equilibrium | LTE | 128 | 3 | 1.008924 | 9807126,9807286,etc |
| extreme ultraviolet explorer | EUVE | 34 | 3 | 1.001975 | 9807343,9807265,etc |
| sunyaev zel'dovich | SZ | 24 | 3 | 1.000622 | 9807003,9807308,etc |
| dark matter | DM | 26 | 3 | 1.001017 | 9807003,9807010,etc |
| rossi x ray timing explorer | RXTE | 30 | 3 | 1.000513 | 9807281,9807278,etc |
| proportional counter array | PCA | 24 | 3 | 2.000745 | 9807281,9807278,etc |
| high surface brightness | HSB | 14 | 3 | 1.000392 | 9807232,9807010,etc |
| narrow line region | NLR | 9 | 3 | 1.000643 | 9807035,9807063,etc |
| advection dominated accretion flow | ADAF | 83 | 3 | 1.004243 | 9807245,9807071,etc |
| wide field camera | WFC | 33 | 3 | 2.002797 | 9807280,9807195,etc |
| spectral energy distributions | SED | 23 | 3 | 1.000395 | 9807317,9807195,etc |
| compton gamma ray observatory | CGRO | 6 | 3 | 1.000055 | 9807317,9807283,etc |
| broad absorption line | BAL | 161 | 3 | 2.008237 | 9807293,9807230,etc |
| local standard of rest | LSR | 10 | 3 | 1.000115 | 9807244,9807157,etc |
| high velocity cloud | HVC | 41 | 3 | 1.001595 | 9807024,9807157,etc |
| rosat all sky survey | RASS | 14 | 3 | 1.000252 | 9807024,9807308,etc |
| infrared astronomical satellite | IRAS | 38 | 3 | 1.003647 | 9807187,9807294,etc |
| supernova remnant | SNR | 132 | 3 | 2.008989 | 9807271,9807346,etc |
| quasi periodic oscillation | QPO | 182 | 3 | 2.007631 | 9807278,9807235,etc |
| signal to noise | S/N | 8 | 3 | 1.000192 | 9807124,9807346,etc |
| globular cluster | GC | 134 | 3 | 2.00341 | 9807124,9807217,etc |
| equations of state | EOS | 90 | 3 | 2.001196 | 9807040,9807254,etc |
| new technology telescope | NTT | 7 | 3 | 1.000387 | 9807153,9807253,etc |
| position sensitive proportional counter | PSPC | 33 | 3 | 2.000686 | 9807258,9807182,etc |
| faint object spectrograph | FOS | 64 | 3 | 2.00121 | 9807063,9807309,etc |