| 1 | cosmic microwave background | CMB | 665 | 30 | 1.00409 | 9810092,9810197,etc |
| 2 | active galactic nucleus | AGN | 498 | 29 | 2.004119 | 9810287,9810197,etc |
| 3 | interstellar medium | ISM | 228 | 20 | 2.001875 | 9810070,9810354,etc |
| 4 | star formation rate | SFR | 97 | 19 | 1.002046 | 9810070,9810004,etc |
| 5 | cold dark matter | CDM | 322 | 18 | 1.002372 | 9810341,9810203,etc |
| 6 | spectral energy distribution | SED | 85 | 17 | 1.000834 | 9810287,9810197,etc |
| 7 | gamma ray burst | GRB | 850 | 15 | 2.006843 | 9810389,9810326,etc |
| 8 | nasa/ipac extragalactic database | NED | 21 | 14 | 1.000149 | 9810287,9810209,etc |
| 9 | point spread function | PSF | 87 | 14 | 2.001527 | 9810365,9810140,etc |
| 10 | low surface brightness | LSB | 232 | 11 | 1.005872 | 9810177,9810295,etc |
| 11 | initial mass function | IMF | 66 | 11 | 1.001076 | 9810233,9810125,etc |
| 12 | hubble space telescope | HST | 66 | 10 | 1.0013 | 9810287,9810044,etc |
| 13 | dark matter | DM | 190 | 10 | 2.001664 | 9810511,9810070,etc |
| 14 | luminosity function | LF | 153 | 10 | 1.002615 | 9810511,9810135,etc |
| 15 | advection dominated accretion flow | ADAF | 309 | 10 | 2.002224 | 9810406,9810226,etc |
| 16 | near infrared | NIR | 73 | 9 | 2.001904 | 9810287,9810405,etc |
| 17 | star formation | SF | 82 | 9 | 2.002859 | 9810138,9810267,etc |
| 18 | supernova remnant | SNR | 122 | 8 | 2.003435 | 9810365,9810472,etc |
| 19 | color magnitude diagram | CMD | 59 | 8 | 2.001482 | 9810134,9810017,etc |
| 20 | position sensitive proportional counter | PSPC | 81 | 7 | 2.00188 | 9810050,9810170,etc |
| 21 | large magellanic cloud | LMC | 62 | 7 | 2.00205 | 9810365,9810155,etc |
| 22 | smoothed particle hydrodynamics | SPH | 70 | 7 | 2.001562 | 9810208,9810118,etc |
| 23 | large scale structure | LSS | 64 | 7 | 2.001283 | 9810349,9810440,etc |
| 24 | ultraviolet | UV | 187 | 6 | 2.005541 | 9810287,9810070,etc |
| 25 | narrow line region | NLR | 41 | 6 | 1.00053 | 9810287,9810082,etc |
| 26 | rosat all sky survey | RASS | 25 | 6 | 1.002176 | 9810054,9810243,etc |
| 27 | horizontal branch | HB | 177 | 6 | 2.003146 | 9810070,9810259,etc |
| 28 | red giant branch | RGB | 130 | 6 | 2.001729 | 9810070,9810134,etc |
| 29 | asymptotic giant branch | AGB | 58 | 6 | 2.002099 | 9810070,9810125,etc |
| 30 | main sequence | MS | 47 | 6 | 1.001327 | 9810070,9810259,etc |
| 31 | far infrared | FIR | 82 | 6 | 1.004638 | 9810260,9810480,etc |
| 32 | broad absorption line | BAL | 287 | 5 | 2.004329 | 9810287,9810309,etc |
| 33 | x ray luminosity function | XLF | 33 | 5 | 1.001348 | 9810054,9810254,etc |
| 34 | sloan digital sky survey | SDSS | 16 | 5 | 1.001194 | 9810203,9810130,etc |
| 35 | high surface brightness | HSB | 56 | 5 | 1.00216 | 9810295,9810162,etc |
| 36 | black hole candidate | BHC | 118 | 5 | 2.001692 | 9810139,9810143,etc |
| 37 | proportional counter array | PCA | 26 | 5 | 2.001817 | 9810139,9810077,etc |
| 38 | hubble deep field | HDF | 129 | 5 | 1.001703 | 9810044,9810285,etc |
| 39 | all sky monitor | ASM | 10 | 5 | 1.000478 | 9810077,9810187,etc |
| 40 | supernova | SN | 293 | 5 | 2.007977 | 9810276,9810440,etc |
| 41 | owens valley radio observatory | OVRO | 24 | 5 | 1.000282 | 9810047,9810260,etc |
| 42 | wide field camera | WFC | 23 | 5 | 2.00084 | 9810003,9810109,etc |
| 43 | full width at half maximum | FWHM | 81 | 4 | 2.001267 | 9810287,9810028,etc |
| 44 | hot dark matter | HDM | 50 | 4 | 2.003401 | 9810075,9810341,etc |
| 45 | surface brightness | SB | 89 | 4 | 2.004685 | 9810511,9810294,etc |
| 46 | sunyaev zel'dovich | SZ | 53 | 4 | 2.000756 | 9810149,9810236,etc |
| 47 | tully fisher | TF | 121 | 4 | 2.005521 | 9810070,9810467,etc |
| 48 | broad line region | BLR | 29 | 4 | 1.001619 | 9810082,9810114,etc |
| 49 | signal to noise ratio | SNR | 15 | 4 | 1.000471 | 9810262,9810285,etc |
| 50 | inverse compton | IC | 82 | 4 | 2.000474 | 9810319,9810187,etc |
| 51 | low mass x ray binary | LMXB | 40 | 4 | 2.002501 | 9810484,9810185,etc |
| 52 | rossi x ray timing explorer | RXTE | 34 | 4 | 1.002268 | 9810139,9810406,etc |
| 53 | high energy x ray timing experiment | HEXTE | 11 | 4 | 1.001292 | 9810139,9810077,etc |
| 54 | infrared space observatory | ISO | 125 | 4 | 1.003231 | 9810044,9810480,etc |
| 55 | james clerk maxwell telescope | JCMT | 18 | 4 | 1.000564 | 9810434,9810047,etc |
| 56 | burst and transient source experiment | BATSE | 51 | 4 | 2.00484 | 9810040,9810238,etc |
| 57 | quasi periodic oscillation | QPO | 112 | 4 | 2.004113 | 9810342,9810141,etc |
| 58 | faint object spectrograph | FOS | 35 | 4 | 2.00081 | 9810407,9810109,etc |
| 59 | broad emission line region | BELR | 26 | 3 | 2.000323 | 9810287,9810249,etc |
| 60 | equivalent width | EW | 121 | 3 | 2.003367 | 9810287,9810232,etc |
| 61 | kolmogorov smirnov | K-S | 12 | 3 | 1.000196 | 9810287,9810138,etc |
| 62 | high resolution imager | HRI | 34 | 3 | 2.001081 | 9810050,9810009,etc |
| 63 | fundamental plane | FP | 43 | 3 | 2.002991 | 9810199,9810066,etc |
| 64 | equation of state | EOS | 92 | 3 | 2.001002 | 9810361,9810065,etc |
| 65 | adaptive optics bonnette | AOB | 27 | 3 | 1.002102 | 9810140,9810250,etc |
| 66 | discrete wavelet transform | DWT | 42 | 3 | 2.001419 | 9810200,9810165,etc |
| 67 | local group | LG | 123 | 3 | 1.001536 | 9810070,9810460,etc |
| 68 | small magellanic cloud | SMC | 10 | 3 | 2.000652 | 9810070,9810080,etc |
| 69 | diffractive interstellar scintillation | DISS | 38 | 3 | 2.000442 | 9810354,9810369,etc |
| 70 | refractive interstellar scintillation | RISS | 84 | 3 | 2.000497 | 9810354,9810369,etc |
| 71 | extra galactic radio | EGR | 5 | 3 | 1.000018 | 9810354,9810369,etc |
| 72 | ooty radio telescope | ORT | 9 | 3 | 1.000039 | 9810354,9810369,etc |
| 73 | cataclysmic variable | CV | 61 | 3 | 2.006883 | 9810484,9810357,etc |
| 74 | accretion disk corona | ADC | 20 | 3 | 1.001119 | 9810139,9810185,etc |
| 75 | maximum entropy method | MEM | 32 | 3 | 2.00149 | 9810236,9810062,etc |
| 76 | cerro tololo inter american observatory | CTIO | 11 | 3 | 1.000212 | 9810467,9810259,etc |
| 77 | large area detector | LAD | 14 | 3 | 1.000647 | 9810326,9810270,etc |
| 78 | high velocity cloud | HVC | 340 | 3 | 2.00707 | 9810307,9810469,etc |
| 79 | extreme ultraviolet | EUV | 49 | 3 | 2.006856 | 9810451,9810187,etc |
| 80 | singular isothermal sphere | SIS | 31 | 3 | 2.001154 | 9810393,9810383,etc |
| 81 | young stellar object | YSO | 11 | 3 | 1.000156 | 9810427,9810508,etc |
| 82 | cosmic microwave background radiation | CMBR | 24 | 3 | 1.004024 | 9810409,9810102,etc |
| 83 | adaptive refinement tree | ART | 5 | 3 | 1.000308 | 9810164,9810445,etc |
| 84 | very long baseline interferometry | VLBI | 14 | 3 | 1.000304 | 9810495,9810226,etc |
| 85 | point response function | PRF | 5 | 3 | 1.000311 | 9810144,9810343,etc |
| 86 | compton gamma ray observatory | CGRO | 9 | 3 | 1.000794 | 9810158,9810212,etc |
| 87 | friends of friends | FOF | 20 | 3 | 1.001507 | 9810445,9810191,etc |
| 88 | x ray background | XRB | 25 | 3 | 1.003166 | 9810169,9810413,etc |
| 89 | intergalactic medium | IGM | 61 | 3 | 2.00202 | 9810080,9810453,etc |
| 90 | eso slice project | ESP | 29 | 3 | 2.001109 | 9810173,9810091,etc |
| 91 | friedmann robertson walker | FRW | 13 | 3 | 1.000446 | 9810364,9810123,etc |
| 92 | soft x ray transient | SXT | 175 | 3 | 2.00592 | 9810492,9810323,etc |
| 93 | probability distribution function | PDF | 10 | 3 | 2.000579 | 9810198,9810049,etc |