| 1 | active galactic nucleus | AGN | 447 | 30 | 2.004221 | 9903198,9903280,etc |
| 2 | cosmic microwave background | CMB | 565 | 28 | 1.003528 | 9903032,9903028,etc |
| 3 | interstellar medium | ISM | 256 | 24 | 1.001826 | 9903356,9903369,etc |
| 4 | nasa/ipac extragalactic database | NED | 36 | 19 | 1.000425 | 9903065,9903348,etc |
| 5 | star formation rate | SFR | 140 | 18 | 1.001718 | 9903038,9903121,etc |
| 6 | cold dark matter | CDM | 346 | 16 | 2.004074 | 9903164,9903335,etc |
| 7 | point spread function | PSF | 135 | 15 | 1.001514 | 9903447,9903120,etc |
| 8 | supernova remnant | SNR | 220 | 15 | 2.003933 | 9903244,9903369,etc |
| 9 | initial mass function | IMF | 75 | 15 | 1.000698 | 9903054,9903470,etc |
| 10 | spectral energy distribution | SED | 120 | 13 | 2.00371 | 9903456,9903340,etc |
| 11 | gamma ray burst | GRB | 327 | 12 | 2.009897 | 9903399,9903126,etc |
| 12 | full width at half maximum | FWHM | 66 | 10 | 1.000781 | 9903441,9903197,etc |
| 13 | all sky monitor | ASM | 89 | 9 | 2.002587 | 9903306,9903228,etc |
| 14 | ultraluminous infrared galaxy | ULIG | 225 | 9 | 2.006133 | 9903214,9903152,etc |
| 15 | low mass x ray binary | LMXB | 61 | 9 | 2.002162 | 9903450,9903106,etc |
| 16 | hubble space telescope | HST | 78 | 8 | 2.001539 | 9903018,9903490,etc |
| 17 | luminosity function | LF | 286 | 7 | 2.003819 | 9903456,9903286,etc |
| 18 | very large array | VLA | 46 | 7 | 1.000755 | 9903227,9903441,etc |
| 19 | asymptotic giant branch | AGB | 117 | 7 | 2.001878 | 9903018,9903017,etc |
| 20 | color magnitude diagram | CMD | 119 | 7 | 1.003014 | 9903258,9903120,etc |
| 21 | near infrared | NIR | 31 | 7 | 1.000769 | 9903340,9903463,etc |
| 22 | proportional counter array | PCA | 71 | 7 | 2.002192 | 9903083,9903062,etc |
| 23 | william herschel telescope | WHT | 41 | 7 | 1.000769 | 9903217,9903410,etc |
| 24 | quasi periodic oscillation | QPO | 341 | 7 | 2.008449 | 9903450,9903148,etc |
| 25 | australia telescope compact array | ATCA | 22 | 6 | 1.000118 | 9903448,9903016,etc |
| 26 | cosmic microwave background radiation | CMBR | 78 | 6 | 2.001822 | 9903361,9903460,etc |
| 27 | isaac newton telescope | INT | 25 | 6 | 1.00046 | 9903018,9903217,etc |
| 28 | james clerk maxwell telescope | JCMT | 19 | 6 | 2.000329 | 9903441,9903340,etc |
| 29 | far infrared | FIR | 83 | 6 | 1.001005 | 9903463,9903269,etc |
| 30 | field of view | FOV | 68 | 6 | 2.000881 | 9903490,9903302,etc |
| 31 | intergalactic medium | IGM | 123 | 6 | 2.002836 | 9903063,9903336,etc |
| 32 | supernova | SN | 755 | 6 | 2.01345 | 9903229,9903466,etc |
| 33 | wolf rayet | WR | 97 | 5 | 2.002732 | 9903018,9903197,etc |
| 34 | horizontal branch | HB | 381 | 5 | 2.006524 | 9903258,9903120,etc |
| 35 | digitized sky survey | DSS | 7 | 5 | 1.000228 | 9903398,9903269,etc |
| 36 | owens valley radio observatory | OVRO | 44 | 5 | 2.000535 | 9903441,9903463,etc |
| 37 | sloan digital sky survey | SDSS | 75 | 5 | 1.003073 | 9903396,9903081,etc |
| 38 | very high energy | VHE | 100 | 5 | 2.003047 | 9903244,9903263,etc |
| 39 | optical transient | OT | 141 | 5 | 2.006196 | 9903021,9903271,etc |
| 40 | main sequence | MS | 32 | 5 | 1.001136 | 9903120,9903329,etc |
| 41 | signal to noise | S/N | 33 | 5 | 1.000576 | 9903007,9903059,etc |
| 42 | position sensitive proportional counter | PSPC | 73 | 5 | 2.001894 | 9903269,9903355,etc |
| 43 | big bang nucleosynthesis | BBN | 48 | 5 | 2.002436 | 9903183,9903004,etc |
| 44 | hubble deep field | HDF | 108 | 5 | 1.001369 | 9903054,9903299,etc |
| 45 | kolmogorov smirnov | K-S | 21 | 5 | 1.001142 | 9903063,9903458,etc |
| 46 | equivalent width | EW | 19 | 5 | 1.000342 | 9903457,9903217,etc |
| 47 | black hole | BH | 191 | 5 | 1.008319 | 9903123,9903417,etc |
| 48 | synchrotron self compton | SSC | 47 | 4 | 1.002114 | 9903099,9903263,etc |
| 49 | large magellanic cloud | LMC | 91 | 4 | 1.003524 | 9903011,9903329,etc |
| 50 | low surface brightness | LSB | 58 | 4 | 2.003032 | 9903164,9903064,etc |
| 51 | red giant branch | RGB | 101 | 4 | 1.001839 | 9903258,9903120,etc |
| 52 | signal to noise ratio | SNR | 16 | 4 | 1.000244 | 9903441,9903228,etc |
| 53 | energetic particle | EP | 135 | 4 | 1.003317 | 9903356,9903369,etc |
| 54 | photomultiplier tube | PMT | 35 | 4 | 2.000447 | 9903244,9903342,etc |
| 55 | residual dark distribution | RDD | 20 | 4 | 1.00029 | 9903278,9903424,etc |
| 56 | compton gamma ray observatory | CGRO | 11 | 4 | 1.00037 | 9903180,9903492,etc |
| 57 | very long baseline interferometry | VLBI | 64 | 4 | 2.001429 | 9903042,9903390,etc |
| 58 | united kingdom infrared telescope | UKIRT | 31 | 4 | 1.000692 | 9903487,9903250,etc |
| 59 | cataclysmic variable | CV | 31 | 4 | 2.000382 | 9903058,9903328,etc |
| 60 | rossi x ray timing explorer | RXTE | 35 | 4 | 2.001047 | 9903062,9903311,etc |
| 61 | inverse compton | IC | 22 | 4 | 2.001056 | 9903044,9903321,etc |
| 62 | extended medium sensitivity survey | EMSS | 94 | 4 | 2.003087 | 9903044,9903117,etc |
| 63 | inner lindblad resonance | ILR | 63 | 4 | 2.00026 | 9903409,9903414,etc |
| 64 | burst and transient source experiment | BATSE | 51 | 4 | 1.004547 | 9903399,9903126,etc |
| 65 | polycyclic aromatic hydrocarbon | PAH | 93 | 4 | 2.001266 | 9903067,9903152,etc |
| 66 | next generation space telescope | NGST | 5 | 4 | 1.000101 | 9903336,9903229,etc |
| 67 | position angle | PA | 48 | 4 | 1.000836 | 9903390,9903314,etc |
| 68 | nasa extragalactic database | NED | 9 | 4 | 1.000776 | 9903443,9903250,etc |
| 69 | white dwarf | WD | 237 | 4 | 2.005764 | 9903229,9903254,etc |
| 70 | optical module | OM | 95 | 4 | 2.003699 | 9903342,9903341,etc |
| 71 | planetary nebula | PN | 30 | 4 | 1.00159 | 9903410,9903419,etc |
| 72 | wide field planetary camera 2 | WFPC2 | 36 | 3 | 1.00152 | 9903065,9903245,etc |
| 73 | dwarf spheroidal | dSph | 31 | 3 | 2.001724 | 9903065,9903017,etc |
| 74 | anglo australian telescope | AAT | 9 | 3 | 1.000225 | 9903456,9903016,etc |
| 75 | broad absorption line | BAL | 89 | 3 | 1.008304 | 9903140,9903063,etc |
| 76 | jacobus kapteyn telescope | JKT | 14 | 3 | 2.001656 | 9903133,9903060,etc |
| 77 | surface of last scattering | SLS | 25 | 3 | 2.00088 | 9903032,9903038,etc |
| 78 | local group | LG | 12 | 3 | 2.000044 | 9903348,9903430,etc |
| 79 | wide field camera | WFC | 40 | 3 | 1.002299 | 9903198,9903217,etc |
| 80 | high energy astrophysics science archive research center | HEASARC | 8 | 3 | 1.000055 | 9903198,9903278,etc |
| 81 | ultraviolet | UV | 123 | 3 | 1.003582 | 9903018,9903054,etc |
| 82 | intermediate dispersion spectrograph | IDS | 10 | 3 | 2.00005 | 9903018,9903226,etc |
| 83 | solid state imaging spectrometer | SIS | 34 | 3 | 2.000744 | 9903243,9903424,etc |
| 84 | las campanas redshift survey | LCRS | 24 | 3 | 2.001591 | 9903396,9903165,etc |
| 85 | rosat all sky survey | RASS | 38 | 3 | 1.003417 | 9903396,9903125,etc |
| 86 | equivalent widths | EW | 51 | 3 | 1.002781 | 9903197,9903130,etc |
| 87 | x ray background | XRB | 36 | 3 | 2.001931 | 9903447,9903336,etc |
| 88 | uk infrared telescope | UKIRT | 17 | 3 | 1.000434 | 9903340,9903410,etc |
| 89 | high surface brightness | HSB | 27 | 3 | 2.001205 | 9903184,9903064,etc |
| 90 | tully fisher relation | TFR | 62 | 3 | 1.003941 | 9903184,9903007,etc |
| 91 | nordic optical telescope | NOT | 13 | 3 | 1.000153 | 9903120,9903314,etc |
| 92 | imaging proportional counter | IPC | 46 | 3 | 2.001122 | 9903269,9903479,etc |
| 93 | x ray telescope | XRT | 13 | 3 | 2.000268 | 9903278,9903376,etc |
| 94 | right ascension | RA | 14 | 3 | 1.001591 | 9903271,9903223,etc |
| 95 | maximum entropy method | MEM | 14 | 3 | 2.000363 | 9903490,9903328,etc |
| 96 | fast fourier transform | FFT | 3 | 3 | 1.000219 | 9903490,9903290,etc |
| 97 | gas imaging spectrometer | GIS | 43 | 3 | 2.001194 | 9903424,9903376,etc |
| 98 | oriented scintillation spectrometer experiment | OSSE | 24 | 3 | 1.000561 | 9903424,9903247,etc |
| 99 | press schechter | PS | 11 | 3 | 1.00057 | 9903027,9903117,etc |
| 100 | star formation history | SFH | 40 | 3 | 2.000924 | 9903371,9903421,etc |
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