| 1 | active galactic nucleus | AGN | 363 | 24 | 2.00396 | 0009435,0009220,etc |
| 2 | cosmic microwave background | CMB | 344 | 23 | 2.003089 | 0009129,0009071,etc |
| 3 | spectral energy distribution | SED | 291 | 23 | 1.001653 | 0009220,0009347,etc |
| 4 | cold dark matter | CDM | 178 | 21 | 2.003274 | 0009125,0009317,etc |
| 5 | point spread function | PSF | 178 | 17 | 2.002939 | 0009097,0009401,etc |
| 6 | nasa/ipac extragalactic database | NED | 23 | 16 | 1.000132 | 0009220,0009161,etc |
| 7 | luminosity function | LF | 468 | 15 | 2.006128 | 0009125,0009431,etc |
| 8 | interstellar medium | ISM | 150 | 14 | 2.003443 | 0009069,0009318,etc |
| 9 | hubble space telescope | HST | 63 | 13 | 1.001325 | 0009162,0009208,etc |
| 10 | star formation rate | SFR | 138 | 12 | 2.001672 | 0009176,0009312,etc |
| 11 | gamma ray burst | GRB | 502 | 11 | 2.00511 | 0009242,0009447,etc |
| 12 | low mass x ray binary | LMXB | 71 | 11 | 1.001983 | 0009328,0009183,etc |
| 13 | supernova remnant | SNR | 114 | 11 | 2.002624 | 0009250,0009088,etc |
| 14 | equivalent width | EW | 64 | 8 | 2.001009 | 0009435,0009148,etc |
| 15 | signal to noise ratio | S/N | 27 | 8 | 1.001169 | 0009253,0009380,etc |
| 16 | large magellanic cloud | LMC | 149 | 8 | 2.006796 | 0009299,0009318,etc |
| 17 | supernova | SN | 481 | 8 | 2.006229 | 0009318,0009176,etc |
| 18 | neutron star | NS | 162 | 8 | 2.004778 | 0009434,0009064,etc |
| 19 | advection dominated accretion flow | ADAF | 156 | 8 | 1.004298 | 0009207,0009240,etc |
| 20 | proportional counter array | PCA | 99 | 7 | 1.002667 | 0009435,0009375,etc |
| 21 | infrared space observatory | ISO | 164 | 7 | 2.000966 | 0009440,0009220,etc |
| 22 | very large array | VLA | 53 | 7 | 2.001647 | 0009220,0009442,etc |
| 23 | cataclysmic variable | CV | 111 | 7 | 2.002683 | 0009472,0009420,etc |
| 24 | broad line region | BLR | 106 | 7 | 2.002467 | 0009124,0009083,etc |
| 25 | initial mass function | IMF | 160 | 7 | 2.003691 | 0009158,0009007,etc |
| 26 | near infrared | NIR | 79 | 7 | 2.001649 | 0009345,0009287,etc |
| 27 | quasi periodic oscillation | QPO | 302 | 7 | 2.0075 | 0009354,0009148,etc |
| 28 | space telescope imaging spectrograph | STIS | 76 | 7 | 2.002595 | 0009208,0009403,etc |
| 29 | hubble deep field | HDF | 70 | 6 | 1.00246 | 0009220,0009068,etc |
| 30 | low surface brightness | LSB | 113 | 6 | 1.007532 | 0009018,0009370,etc |
| 31 | black hole | BH | 132 | 6 | 2.005827 | 0009253,0009076,etc |
| 32 | very long baseline array | VLBA | 120 | 6 | 2.004275 | 0009124,0009079,etc |
| 33 | black hole candidate | BHC | 44 | 6 | 2.001331 | 0009434,0009354,etc |
| 34 | intracluster medium | ICM | 68 | 6 | 1.001197 | 0009375,0009007,etc |
| 35 | signal to noise | S/N | 26 | 6 | 2.000535 | 0009397,0009102,etc |
| 36 | far infrared | FIR | 229 | 6 | 2.002999 | 0009454,0009162,etc |
| 37 | singular isothermal sphere | SIS | 54 | 6 | 2.000795 | 0009068,0009325,etc |
| 38 | full width at half maximum | FWHM | 31 | 6 | 1.00047 | 0009380,0009462,etc |
| 39 | main sequence | MS | 52 | 5 | 2.002643 | 0009066,0009401,etc |
| 40 | dark matter | DM | 95 | 5 | 1.005751 | 0009125,0009197,etc |
| 41 | asymptotic giant branch | AGB | 101 | 5 | 2.003279 | 0009363,0009505,etc |
| 42 | james clerk maxwell telescope | JCMT | 13 | 5 | 1.000094 | 0009363,0009151,etc |
| 43 | red giant branch | RGB | 60 | 5 | 1.00382 | 0009401,0009090,etc |
| 44 | equation of state | EOS | 94 | 5 | 2.004396 | 0009113,0009328,etc |
| 45 | white dwarf | WD | 97 | 5 | 1.002985 | 0009312,0009049,etc |
| 46 | high velocity cloud | HVC | 56 | 5 | 1.007306 | 0009138,0009190,etc |
| 47 | infrared | IR | 339 | 4 | 2.008536 | 0009220,0009146,etc |
| 48 | hubble deep field south | HDFS | 27 | 4 | 2.000632 | 0009010,0009345,etc |
| 49 | sloan digital sky survey | SDSS | 13 | 4 | 1.000842 | 0009066,0009366,etc |
| 50 | zero age main sequence | ZAMS | 56 | 4 | 2.001872 | 0009421,0009458,etc |
| 51 | small magellanic cloud | SMC | 51 | 4 | 1.002295 | 0009299,0009155,etc |
| 52 | intergalactic medium | IGM | 35 | 4 | 1.001777 | 0009125,0009190,etc |
| 53 | rosat all sky survey | RASS | 47 | 4 | 1.002782 | 0009110,0009379,etc |
| 54 | international ultraviolet explorer | IUE | 20 | 4 | 1.001268 | 0009363,0009502,etc |
| 55 | monte carlo | MC | 20 | 4 | 2.000441 | 0009363,0009224,etc |
| 56 | big bang nucleosynthesis | BBN | 61 | 4 | 1.001477 | 0009432,0009475,etc |
| 57 | inverse compton | IC | 113 | 4 | 2.002427 | 0009009,0009202,etc |
| 58 | planetary nebula | PN | 431 | 4 | 2.009225 | 0009054,0009396,etc |
| 59 | rossi x ray timing explorer | RXTE | 33 | 4 | 2.001669 | 0009481,0009194,etc |
| 60 | field of view | FOV | 8 | 4 | 1.000316 | 0009013,0009160,etc |
| 61 | canada france redshift survey | CFRS | 10 | 3 | 2.000024 | 0009220,0009025,etc |
| 62 | two micron all sky survey | 2MASS | 17 | 3 | 2.000894 | 0009220,0009250,etc |
| 63 | nrao vla sky survey | NVSS | 8 | 3 | 1.000299 | 0009220,0009260,etc |
| 64 | high surface brightness | HSB | 21 | 3 | 1.003898 | 0009018,0009370,etc |
| 65 | color magnitude diagram | CMD | 27 | 3 | 2.000795 | 0009066,0009401,etc |
| 66 | local thermodynamic equilibrium | LTE | 20 | 3 | 2.001188 | 0009182,0009363,etc |
| 67 | truncated isothermal sphere | TIS | 42 | 3 | 1.002332 | 0009125,0009495,etc |
| 68 | long wavelength spectrometer | LWS | 29 | 3 | 2.001976 | 0009363,0009428,etc |
| 69 | horizontal branch | HB | 92 | 3 | 2.006945 | 0009401,0009183,etc |
| 70 | greisen zatsepin kuzmin | GZK | 33 | 3 | 2.000317 | 0009466,0009416,etc |
| 71 | position angle | PA | 37 | 3 | 2.001934 | 0009102,0009496,etc |
| 72 | galactic center | GC | 46 | 3 | 2.002026 | 0009442,0009445,etc |
| 73 | european southern observatory | ESO | 11 | 3 | 2.000327 | 0009442,0009025,etc |
| 74 | neutron stars | NS | 57 | 3 | 2.004904 | 0009093,0009282,etc |
| 75 | the red giant branch | TRGB | 25 | 3 | 2.002175 | 0009335,0009504,etc |
| 76 | synchrotron self compton | SSC | 26 | 3 | 1.003465 | 0009308,0009121,etc |
| 77 | false alarm probability | FAP | 12 | 3 | 1.000838 | 0009087,0009423,etc |
| 78 | ultraviolet | UV | 11 | 3 | 1.001812 | 0009345,0009151,etc |
| 79 | all sky monitor | ASM | 24 | 3 | 2.003683 | 0009354,0009481,etc |
| 80 | pre main sequence | PMS | 14 | 3 | 2.000596 | 0009262,0009179,etc |
| 81 | magnetohydrodynamic | MHD | 86 | 3 | 2.001542 | 0009088,0009227,etc |
| 82 | three dimensional | 3D | 36 | 3 | 2.001904 | 0009088,0009412,etc |
| 83 | goddard high resolution spectrograph | GHRS | 20 | 3 | 2.001467 | 0009208,0009190,etc |
| 84 | globular cluster | GC | 178 | 3 | 2.006542 | 0009246,0009090,etc |
| 85 | star formation | SF | 76 | 3 | 2.003025 | 0009315,0009494,etc |
| 86 | sunyaev zel'dovich | SZ | 40 | 3 | 1.003147 | 0009114,0009067,etc |
| 87 | high resolution imager | HRI | 96 | 3 | 2.008804 | 0009379,0009238,etc |
| 88 | atacama large millimeter array | ALMA | 5 | 3 | 1.000037 | 0009151,0009428,etc |
| 89 | soft x ray transient | SXT | 26 | 3 | 1.001135 | 0009148,0009415,etc |
| 90 | luminous blue variable | LBV | 12 | 3 | 1.000455 | 0009280,0009027,etc |
| 91 | very long baseline interferometry | VLBI | 51 | 3 | 2.000738 | 0009301,0009116,etc |
| 92 | cosmic microwave background radiation | CMBR | 64 | 3 | 1.002137 | 0009296,0009061,etc |
| 93 | large scale structure | LSS | 38 | 3 | 2.002102 | 0009296,0009057,etc |
| 94 | brown dwarf | BD | 28 | 3 | 2.00029 | 0009174,0009216,etc |
| 95 | supermassive black hole | SMBH | 73 | 3 | 2.00311 | 0009267,0009441,etc |
| 96 | united kingdom infrared telescope | UKIRT | 19 | 3 | 1.000578 | 0009172,0009218,etc |
| 97 | extragalactic background light | EBL | 19 | 3 | 2.000622 | 0009369,0009311,etc |
| 98 | low energy concentrator spectrometer | LECS | 31 | 3 | 2.000897 | 0009231,0009013,etc |