| interstellar medium | ISM | 407 | 31 | 2.00214 | 0101281,0101350,etc |
| active galactic nucleus | AGN | 543 | 29 | 2.005002 | 0101075,0101313,etc |
| cosmic microwave background | CMB | 454 | 28 | 2.004259 | 0101112,0101333,etc |
| spectral energy distribution | SED | 269 | 26 | 2.001337 | 0101117,0101555,etc |
| nasa/ipac extragalactic database | NED | 57 | 22 | 1.000481 | 0101003,0101570,etc |
| point spread function | PSF | 183 | 21 | 1.002301 | 0101107,0101213,etc |
| cold dark matter | CDM | 198 | 16 | 2.003048 | 0101127,0101067,etc |
| initial mass function | IMF | 295 | 16 | 1.008101 | 0101541,0101534,etc |
| supernova remnant | SNR | 167 | 13 | 2.002485 | 0101115,0101273,etc |
| star formation rate | SFR | 135 | 13 | 2.00287 | 0101319,0101534,etc |
| signal to noise ratio | SNR | 57 | 12 | 1.000454 | 0101336,0101217,etc |
| hubble space telescope | HST | 100 | 12 | 1.001144 | 0101213,0101200,etc |
| low mass x ray binary | LMXB | 127 | 11 | 2.001502 | 0101156,0101475,etc |
| near infrared | NIR | 188 | 11 | 1.00175 | 0101242,0101464,etc |
| asymptotic giant branch | AGB | 353 | 10 | 2.003293 | 0101374,0101107,etc |
| equivalent width | EW | 142 | 10 | 2.001567 | 0101079,0101540,etc |
| gamma ray burst | GRB | 452 | 10 | 2.009185 | 0101163,0101234,etc |
| equation of state | EQS | 78 | 9 | 1.001046 | 0101514,0101267,etc |
| luminosity function | LF | 114 | 9 | 2.001359 | 0101541,0101217,etc |
| intergalactic medium | IGM | 85 | 9 | 2.002874 | 0101517,0101005,etc |
| space telescope imaging spectrograph | STIS | 117 | 8 | 2.001423 | 0101548,0101307,etc |
| color magnitude diagram | CMD | 70 | 8 | 2.001464 | 0101217,0101135,etc |
| full width at half maximum | FWHM | 30 | 8 | 1.000398 | 0101486,0101340,etc |
| sloan digital sky survey | SDSS | 81 | 8 | 2.004439 | 0101524,0101442,etc |
| neutron star | NS | 462 | 8 | 2.010917 | 0101031,0101138,etc |
| large magellanic cloud | LMC | 49 | 7 | 2.003347 | 0101273,0101107,etc |
| infrared space observatory | ISO | 153 | 7 | 2.002031 | 0101497,0101185,etc |
| adaptive optics | AO | 101 | 7 | 1.007187 | 0101217,0101015,etc |
| proportional counter array | PCA | 43 | 7 | 1.0007 | 0101459,0101540,etc |
| high resolution imager | HRI | 84 | 7 | 2.004461 | 0101437,0101410,etc |
| signal to noise | S/N | 35 | 7 | 1.000287 | 0101032,0101153,etc |
| inverse compton | IC | 120 | 7 | 2.002386 | 0101145,0101301,etc |
| supernova | SN | 694 | 6 | 2.013965 | 0101281,0101534,etc |
| black hole candidate | BHC | 112 | 6 | 2.003279 | 0101459,0101305,etc |
| goddard high resolution spectrograph | GHRS | 61 | 6 | 2.000767 | 0101037,0101064,etc |
| main sequence | MS | 55 | 6 | 2.000726 | 0101200,0101456,etc |
| ultraluminous infrared galaxy | ULIG | 159 | 6 | 2.002288 | 0101185,0101289,etc |
| very large array | VLA | 21 | 6 | 2.000531 | 0101526,0101230,etc |
| all sky monitor | ASM | 36 | 6 | 1.001754 | 0101452,0101045,etc |
| mass function | MF | 183 | 6 | 2.003904 | 0101358,0101529,etc |
| position sensitive proportional counter | PSPC | 35 | 5 | 1.001328 | 0101156,0101410,etc |
| field of view | FOV | 40 | 5 | 2.000941 | 0101281,0101054,etc |
| broad line region | BLR | 39 | 5 | 1.000948 | 0101117,0101037,etc |
| compton gamma ray observatory | CGRO | 22 | 5 | 1.001982 | 0101382,0101138,etc |
| burst and transient source experiment | BATSE | 63 | 5 | 2.004246 | 0101163,0101045,etc |
| low surface brightness | LSB | 176 | 5 | 2.006442 | 0101135,0101276,etc |
| horizontal branch | HB | 32 | 5 | 1.002245 | 0101200,0101518,etc |
| dark matter | DM | 41 | 5 | 1.001501 | 0101174,0101317,etc |
| black hole | BH | 100 | 5 | 2.001843 | 0101174,0101203,etc |
| big bang nucleosynthesis | BBN | 167 | 5 | 2.004765 | 0101524,0101236,etc |
| gamma ray bursts | GRB | 31 | 5 | 2.002031 | 0101452,0101245,etc |
| cataclysmic variable | CV | 55 | 5 | 2.002078 | 0101201,0101093,etc |
| white dwarf | WD | 258 | 5 | 2.007467 | 0101520,0101021,etc |
| root mean square | RMS | 22 | 5 | 1.000559 | 0101045,0101494,etc |
| inner lindblad resonance | ILR | 24 | 5 | 1.001723 | 0101332,0101464,etc |
| ultraviolet | UV | 156 | 5 | 2.005317 | 0101027,0101167,etc |
| neutron stars | NS | 285 | 4 | 2.011845 | 0101514,0101047,etc |
| far infrared | FIR | 122 | 4 | 2.00076 | 0101158,0101114,etc |
| intracluster medium | ICM | 34 | 4 | 1.001037 | 0101158,0101114,etc |
| colour magnitude diagram | CMD | 62 | 4 | 2.001163 | 0101541,0101107,etc |
| united kingdom infrared telescope | UKIRT | 22 | 4 | 1.000635 | 0101497,0101463,etc |
| probability distribution function | PDF | 42 | 4 | 1.002164 | 0101112,0101333,etc |
| very long baseline interferometry | VLBI | 111 | 4 | 2.001909 | 0101328,0101570,etc |
| non equilibrium ionization | NEI | 23 | 4 | 1.000518 | 0101281,0101052,etc |
| synchrotron self compton | SSC | 25 | 4 | 1.001388 | 0101382,0101422,etc |
| carbon oxygen | CO | 49 | 4 | 2.002482 | 0101047,0101343,etc |
| smoothed particle hydrodynamics | SPH | 56 | 4 | 1.002236 | 0101296,0101277,etc |
| red giant branch | RGB | 52 | 4 | 1.001671 | 0101200,0101436,etc |
| image reduction and analysis facility | IRAF | 11 | 4 | 1.000141 | 0101486,0101518,etc |
| extragalactic background light | EBL | 22 | 4 | 2.001996 | 0101301,0101082,etc |
| hubble deep field | HDF | 68 | 4 | 2.004009 | 0101340,0101248,etc |
| james clerk maxwell telescope | JCMT | 48 | 4 | 2.00096 | 0101340,0101526,etc |
| weakly interacting massive particle | WIMP | 45 | 4 | 2.002878 | 0101484,0101176,etc |
| two micron all sky survey | 2MASS | 78 | 4 | 2.003965 | 0101372,0101243,etc |
| low mass x ray binaries | LMXB | 73 | 4 | 2.00117 | 0101160,0101505,etc |
| dwarf spheroidal | dSph | 70 | 4 | 2.004377 | 0101456,0101276,etc |
| advanced ccd imaging spectrometer | ACIS | 47 | 4 | 1.001449 | 0101444,0101494,etc |
| high surface brightness | HSB | 50 | 4 | 1.000398 | 0101404,0101276,etc |
| spectral energy distributions | SED | 24 | 4 | 2.000744 | 0101137,0101049,etc |
| circumstellar envelope | CSE | 140 | 3 | 2.001533 | 0101374,0101125,etc |
| next generation space telescope | NGST | 13 | 3 | 1.001974 | 0101307,0101248,etc |
| luminous infrared galaxy | LIG | 55 | 3 | 2.002141 | 0101003,0101038,etc |
| owens valley radio observatory | OVRO | 14 | 3 | 1.001961 | 0101170,0101464,etc |
| cosmic background imager | CBI | 20 | 3 | 1.00197 | 0101170,0101086,etc |
| very long baseline array | VLBA | 33 | 3 | 1.000192 | 0101328,0101570,etc |
| nrao vla sky survey | NVSS | 53 | 3 | 1.002127 | 0101399,0101114,etc |
| principal component analysis | PCA | 40 | 3 | 2.001107 | 0101074,0101361,etc |
| star formation history | SFH | 74 | 3 | 1.003871 | 0101074,0101534,etc |
| local thermodynamic equilibrium | LTE | 12 | 3 | 1.000136 | 0101265,0101518,etc |
| galactic center | GC | 23 | 3 | 1.003384 | 0101350,0101256,etc |
| infrared | IR | 102 | 3 | 2.005907 | 0101350,0101555,etc |
| photo dissociation region | PDR | 14 | 3 | 1.002603 | 0101350,0101038,etc |
| astronomical image processing system | AIPS | 8 | 3 | 1.000176 | 0101570,0101114,etc |
| common envelope | CE | 27 | 3 | 2.001412 | 0101047,0101530,etc |
| william herschel telescope | WHT | 10 | 3 | 1.000051 | 0101213,0101208,etc |
| classical t tauri star | CTTS | 29 | 3 | 1.001244 | 0101486,0101309,etc |
| kolmogorov smirnov | K-S | 10 | 3 | 1.000121 | 0101486,0101155,etc |
| hard x ray | HXR | 132 | 3 | 2.007215 | 0101145,0101008,etc |
| european southern observatory | ESO | 19 | 3 | 2.000289 | 0101463,0101125,etc |
| circular variable filter | CVF | 36 | 3 | 2.000414 | 0101054,0101187,etc |
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