| active galactic nucleus | AGN | 312 | 36 | 1.004593 | 0011330,0011106,etc |
| cosmic microwave background | CMB | 457 | 36 | 2.00354 | 0011301,0011106,etc |
| point spread function | PSF | 284 | 21 | 2.001966 | 0011330,0011255,etc |
| initial mass function | IMF | 366 | 18 | 2.002943 | 0011465,0011522,etc |
| spectral energy distribution | SED | 219 | 18 | 1.002915 | 0011135,0011475,etc |
| interstellar medium | ISM | 119 | 17 | 1.001359 | 0011246,0011215,etc |
| nasa/ipac extragalactic database | NED | 34 | 17 | 1.000349 | 0011256,0011263,etc |
| cold dark matter | CDM | 141 | 17 | 1.001531 | 0011004,0011475,etc |
| star formation rate | SFR | 221 | 17 | 2.00199 | 0011016,0011467,etc |
| supernova remnant | SNR | 135 | 14 | 1.003071 | 0011307,0011158,etc |
| large magellanic cloud | LMC | 207 | 13 | 2.003022 | 0011246,0011307,etc |
| near infrared | NIR | 153 | 12 | 1.001096 | 0011467,0011082,etc |
| supernova | SN | 318 | 10 | 2.005316 | 0011307,0011340,etc |
| hubble space telescope | HST | 70 | 9 | 2.000624 | 0011522,0011307,etc |
| color magnitude diagram | CMD | 186 | 9 | 2.001829 | 0011522,0011136,etc |
| small magellanic cloud | SMC | 159 | 9 | 2.00508 | 0011049,0011173,etc |
| low surface brightness | LSB | 117 | 9 | 2.003663 | 0011227,0011041,etc |
| infrared | IR | 423 | 8 | 2.003007 | 0011135,0011340,etc |
| kolmogorov smirnov | K-S | 38 | 8 | 1.000809 | 0011255,0011572,etc |
| very large array | VLA | 83 | 8 | 2.001503 | 0011505,0011169,etc |
| large scale structure | LSS | 79 | 8 | 1.001332 | 0011381,0011180,etc |
| pre main sequence | pre-MS | 26 | 7 | 1.000729 | 0011125,0011282,etc |
| gamma ray burst | GRB | 275 | 7 | 2.008939 | 0011106,0011525,etc |
| full width at half maximum | FWHM | 46 | 7 | 1.001452 | 0011178,0011105,etc |
| sloan digital sky survey | SDSS | 39 | 6 | 1.002385 | 0011557,0011332,etc |
| lyman break galaxy | LBG | 112 | 6 | 2.005191 | 0011330,0011374,etc |
| black hole | BH | 181 | 6 | 2.006432 | 0011330,0011232,etc |
| globular cluster | GC | 622 | 6 | 2.021029 | 0011522,0011288,etc |
| inverse compton | IC | 114 | 6 | 2.002888 | 0011301,0011357,etc |
| cataclysmic variable | CV | 67 | 6 | 1.001077 | 0011296,0011377,etc |
| signal to noise ratio | SNR | 24 | 6 | 1.000353 | 0011179,0011582,etc |
| luminosity function | LF | 157 | 6 | 2.00245 | 0011328,0011045,etc |
| red giant branch | RGB | 89 | 6 | 1.001806 | 0011497,0011045,etc |
| australia telescope compact array | ATCA | 55 | 6 | 2.001475 | 0011117,0011114,etc |
| proportional counter unit | PCU | 23 | 6 | 1.000539 | 0011418,0011542,etc |
| main sequence | MS | 134 | 6 | 2.004284 | 0011280,0011285,etc |
| national radio astronomy observatory | NRAO | 13 | 6 | 1.000719 | 0011082,0011169,etc |
| field of view | FOV | 57 | 6 | 1.001752 | 0011216,0011214,etc |
| young stellar object | YSO | 27 | 5 | 2.000482 | 0011246,0011178,etc |
| galactic center | GC | 75 | 5 | 1.005663 | 0011512,0011215,etc |
| cosmic ray | CR | 124 | 5 | 1.003534 | 0011330,0011058,etc |
| south atlantic anomaly | SAA | 17 | 5 | 1.000091 | 0011330,0011288,etc |
| broad line region | BLR | 19 | 5 | 1.000472 | 0011330,0011356,etc |
| reflection grating spectrometers | RGS | 47 | 5 | 1.001075 | 0011307,0011574,etc |
| equivalent width | EW | 175 | 5 | 2.00483 | 0011307,0011296,etc |
| quasi periodic oscillation | QPO | 64 | 5 | 2.006925 | 0011009,0011121,etc |
| broad absorption line | BAL | 36 | 5 | 1.000661 | 0011255,0011373,etc |
| cosmic microwave background radiation | CMBR | 29 | 5 | 1.001167 | 0011446,0011452,etc |
| infrared space observatory | ISO | 54 | 5 | 2.00348 | 0011309,0011213,etc |
| all sky monitor | ASM | 53 | 5 | 2.002165 | 0011418,0011305,etc |
| proportional counter array | PCA | 36 | 5 | 2.001033 | 0011418,0011371,etc |
| ultraviolet | UV | 88 | 5 | 2.009181 | 0011096,0011217,etc |
| ministry for university and research | MURST | 5 | 5 | 1.000033 | 0011455,0011389,etc |
| hubble deep field | HDF | 18 | 5 | 1.000265 | 0011335,0011217,etc |
| far infrared | FIR | 39 | 5 | 1.004097 | 0011217,0011152,etc |
| magneto hydrodynamic | MHD | 44 | 4 | 2.001783 | 0011465,0011122,etc |
| large velocity gradient | LVG | 19 | 4 | 1.000947 | 0011331,0011582,etc |
| isaac newton telescope | INT | 16 | 4 | 1.00021 | 0011340,0011024,etc |
| low mass x ray binary | LMXB | 27 | 4 | 1.000562 | 0011352,0011244,etc |
| wolf rayet | WR | 57 | 4 | 2.001463 | 0011582,0011497,etc |
| reflection grating spectrometer | RGS | 30 | 4 | 1.001463 | 0011487,0011167,etc |
| maximum entropy method | MEM | 36 | 4 | 2.003473 | 0011309,0011141,etc |
| zero age main sequence | ZAMS | 13 | 4 | 1.001436 | 0011485,0011303,etc |
| dark matter | DM | 83 | 4 | 2.003195 | 0011320,0011292,etc |
| star formation | SF | 151 | 4 | 2.002195 | 0011428,0011472,etc |
| big bang nucleosynthesis | BBN | 33 | 4 | 1.003005 | 0011526,0011533,etc |
| asymptotic giant branch | AGB | 91 | 4 | 2.004734 | 0011050,0011114,etc |
| advection dominated accretion flow | ADAF | 19 | 4 | 1.000439 | 0011169,0011371,etc |
| molonglo observatory synthesis telescope | MOST | 20 | 4 | 1.000955 | 0011033,0011211,etc |
| intracluster medium | ICM | 81 | 4 | 2.005373 | 0011502,0011518,etc |
| horizontal air showers | HAS | 43 | 3 | 2.001195 | 0011490,0011414,etc |
| molecular cloud | MC | 70 | 3 | 2.00206 | 0011465,0011122,etc |
| anglo australian telescope | AAT | 19 | 3 | 1.000556 | 0011172,0011104,etc |
| william herschel telescope | WHT | 13 | 3 | 1.000114 | 0011340,0011296,etc |
| united kingdom infrared telescope | UKIRT | 11 | 3 | 1.000115 | 0011340,0011082,etc |
| smooth particle hydrodynamics | SPH | 13 | 3 | 1.001762 | 0011158,0011236,etc |
| greisen zatsepin kuzmin | GZK | 36 | 3 | 2.001034 | 0011106,0011320,etc |
| ultra high energy cosmic ray | UHECR | 107 | 3 | 1.003836 | 0011106,0011454,etc |
| neutron star | NS | 185 | 3 | 2.003922 | 0011023,0011253,etc |
| x ray background | XRB | 81 | 3 | 1.00403 | 0011348,0011341,etc |
| european photon imaging camera | EPIC | 22 | 3 | 2.000908 | 0011193,0011159,etc |
| science analysis system | SAS | 10 | 3 | 2.000262 | 0011193,0011038,etc |
| extragalactic background light | EBL | 98 | 3 | 2.002284 | 0011475,0011013,etc |
| synchrotron self compton | SSC | 12 | 3 | 1.000421 | 0011475,0011356,etc |
| space telescope imaging spectrograph | STIS | 30 | 3 | 2.00399 | 0011269,0011153,etc |
| high resolution imager | HRI | 30 | 3 | 1.002949 | 0011159,0011027,etc |
| center for astrophysics | CfA | 10 | 3 | 1.00142 | 0011332,0011567,etc |
| cosmic rays | CR | 130 | 3 | 2.005092 | 0011538,0011221,etc |
| adaptive mesh refinement | AMR | 26 | 3 | 2.003589 | 0011538,0011058,etc |
| multiple mirror telescope | MMT | 10 | 3 | 2.00057 | 0011054,0011470,etc |
| high velocity cloud | HVC | 75 | 3 | 1.005004 | 0011173,0011134,etc |
| science analysis software | SAS | 7 | 3 | 1.000122 | 0011487,0011026,etc |
| narrow line seyfert 1 | NLS1 | 38 | 3 | 2.001061 | 0011167,0011389,etc |
| very long baseline array | VLBA | 39 | 3 | 1.000957 | 0011505,0011460,etc |
| coud'e auxiliary telescope | CAT | 3 | 3 | 1.000122 | 0011562,0011024,etc |
| horizontal branch | HB | 15 | 3 | 2.000382 | 0011497,0011139,etc |
| inner lindblad resonance | ILR | 9 | 3 | 1.00077 | 0011247,0011407,etc |
| long duration balloon | LDB | 26 | 3 | 2.00058 | 0011381,0011378,etc |
| colour magnitude diagram | CMD | 23 | 3 | 2.000234 | 0011280,0011285,etc |
| digitized sky survey | DSS | 6 | 3 | 1.0001 | 0011350,0011112,etc |
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