| 1 | active galactic nucleus | AGN | 122 | 18 | 2.001386 | 9805295,9805011,etc |
| 2 | cold dark matter | CDM | 211 | 15 | 2.002343 | 9805160,9805102,etc |
| 3 | cosmic microwave background | CMB | 274 | 15 | 2.005868 | 9805160,9805102,etc |
| 4 | nasa/ipac extragalactic database | NED | 20 | 14 | 1.000096 | 9805295,9805363,etc |
| 5 | hubble space telescope | HST | 108 | 10 | 2.000757 | 9805155,9805210,etc |
| 6 | initial mass function | IMF | 109 | 10 | 1.004207 | 9805268,9805130,etc |
| 7 | interstellar medium | ISM | 207 | 9 | 2.002267 | 9805172,9805323,etc |
| 8 | full width at half maximum | FWHM | 27 | 8 | 1.000309 | 9805141,9805217,etc |
| 9 | star formation rate | SFR | 191 | 8 | 2.003374 | 9805263,9805130,etc |
| 10 | quasi periodic oscillation | QPO | 249 | 8 | 2.009485 | 9805007,9805366,etc |
| 11 | supernova remnant | SNR | 249 | 8 | 2.005702 | 9805184,9805300,etc |
| 12 | main sequence | MS | 221 | 7 | 1.004779 | 9805032,9805342,etc |
| 13 | spectral energy distribution | SED | 74 | 7 | 1.002013 | 9805155,9805362,etc |
| 14 | large magellanic cloud | LMC | 107 | 7 | 2.002218 | 9805304,9805201,etc |
| 15 | intergalactic medium | IGM | 51 | 7 | 1.001408 | 9805123,9805108,etc |
| 16 | luminosity function | LF | 222 | 7 | 2.003996 | 9805126,9805255,etc |
| 17 | smoothed particle hydrodynamics | SPH | 206 | 7 | 2.002673 | 9805097,9805349,etc |
| 18 | all sky monitor | ASM | 90 | 6 | 2.006362 | 9805372,9805224,etc |
| 19 | proportional counter array | PCA | 53 | 6 | 2.001304 | 9805354,9805198,etc |
| 20 | red giant branch | RGB | 295 | 6 | 2.002286 | 9805268,9805361,etc |
| 21 | low mass x ray binary | LMXB | 97 | 6 | 2.003468 | 9805261,9805280,etc |
| 22 | very large array | VLA | 90 | 5 | 1.002389 | 9805333,9805300,etc |
| 23 | gamma ray burst | GRB | 247 | 5 | 2.008323 | 9805263,9805184,etc |
| 24 | point spread function | PSF | 55 | 5 | 1.00208 | 9805201,9805361,etc |
| 25 | low surface brightness | LSB | 30 | 5 | 1.000415 | 9805161,9805255,etc |
| 26 | color magnitude diagram | CMD | 81 | 5 | 2.001564 | 9805365,9805361,etc |
| 27 | asymptotic giant branch | AGB | 72 | 5 | 2.003075 | 9805361,9805228,etc |
| 28 | position sensitive proportional counter | PSPC | 90 | 5 | 1.001257 | 9805122,9805270,etc |
| 29 | equivalent width | EW | 60 | 4 | 2.001047 | 9805038,9805311,etc |
| 30 | signal to noise ratio | S/N | 13 | 4 | 1.001009 | 9805242,9805207,etc |
| 31 | chemically peculiar | CP | 114 | 4 | 2.007823 | 9805149,9805039,etc |
| 32 | cosmic microwave background radiation | CMB | 75 | 4 | 1.002861 | 9805102,9805123,etc |
| 33 | high resolution imager | HRI | 87 | 4 | 2.001399 | 9805122,9805112,etc |
| 34 | rossi x ray timing explorer | RXTE | 24 | 4 | 2.001965 | 9805178,9805020,etc |
| 35 | rotation measure | RM | 99 | 3 | 2.008088 | 9805363,9805023,etc |
| 36 | tully fisher | TF | 37 | 3 | 2.000801 | 9805013,9805120,etc |
| 37 | black hole candidate | BHC | 25 | 3 | 2.001132 | 9805372,9805256,etc |
| 38 | wide field camera | WFC | 6 | 3 | 1.000223 | 9805372,9805365,etc |
| 39 | brightest cluster galaxy | BCG | 30 | 3 | 2.000193 | 9805155,9805080,etc |
| 40 | two dimensional | 2D | 16 | 3 | 1.000801 | 9805254,9805026,etc |
| 41 | cataclysmic variable | CV | 11 | 3 | 1.000349 | 9805254,9805261,etc |
| 42 | wolf rayet | WR | 93 | 3 | 1.004474 | 9805342,9805352,etc |
| 43 | planetary camera | PC | 52 | 3 | 2.000505 | 9805342,9805365,etc |
| 44 | kolmogorov smirnov | KS | 18 | 3 | 2.000403 | 9805274,9805361,etc |
| 45 | soft x ray transient | SXT | 145 | 3 | 2.001661 | 9805031,9805087,etc |
| 46 | advection dominated accretion flow | ADAF | 9 | 3 | 1.00017 | 9805031,9805345,etc |
| 47 | standard cold dark matter | SCDM | 5 | 3 | 1.000554 | 9805223,9805340,etc |
| 48 | wide field planetary camera 2 | WFPC2 | 108 | 3 | 2.000935 | 9805268,9805161,etc |
| 49 | horizontal branch | HB | 64 | 3 | 2.000828 | 9805268,9805361,etc |
| 50 | period luminosity | PL | 13 | 3 | 1.000067 | 9805268,9805221,etc |
| 51 | sloan digital sky survey | SDSS | 49 | 3 | 2.00172 | 9805255,9805314,etc |
| 52 | adiabatic cold dark matter | ACDM | 19 | 3 | 2.000317 | 9805167,9805212,etc |
| 53 | far infrared | FIR | 30 | 3 | 2.00189 | 9805231,9805283,etc |
| 54 | anglo australian telescope | AAT | 15 | 3 | 2.000415 | 9805280,9805336,etc |
| 55 | white dwarf | WD | 98 | 3 | 2.002511 | 9805183,9805193,etc |
| 56 | red supergiant | RSG | 21 | 3 | 2.000882 | 9805284,9805275,etc |
| 57 | rapidly oscillating ap stars | roAp | 36 | 3 | 1.003267 | 9805036,9805017,etc |
| 58 | luminosity functions | LF | 70 | 3 | 2.003646 | 9805127,9805281,etc |