| cosmic microwave background | CMB | 559 | 41 | 2.003707 | 0210107,0210034,etc |
| active galactic nucleus | AGN | 550 | 39 | 2.003723 | 0210312,0210101,etc |
| spectral energy distribution | SED | 195 | 28 | 2.002121 | 0210055,0210115,etc |
| point spread function | PSF | 197 | 24 | 1.002461 | 0210118,0210053,etc |
| cold dark matter | CDM | 188 | 23 | 2.002589 | 0210107,0210253,etc |
| interstellar medium | ISM | 143 | 23 | 2.001749 | 0210164,0210192,etc |
| gamma ray burst | GRB | 677 | 22 | 1.010479 | 0210671,0210434,etc |
| initial mass function | IMF | 279 | 22 | 2.002041 | 0210312,0210104,etc |
| nasa/ipac extragalactic database | NED | 38 | 20 | 1.000283 | 0210635,0210197,etc |
| star formation rate | SFR | 370 | 19 | 2.00366 | 0210123,0210434,etc |
| supernova | SN | 1213 | 17 | 2.011803 | 0210107,0210312,etc |
| signal to noise ratio | S/N | 79 | 16 | 2.000463 | 0210666,0210050,etc |
| sloan digital sky survey | SDSS | 202 | 16 | 2.001765 | 0210067,0210231,etc |
| full width at half maximum | FWHM | 63 | 14 | 1.001381 | 0210391,0210053,etc |
| hubble space telescope | HST | 103 | 14 | 2.001087 | 0210027,0210529,etc |
| asymptotic giant branch | AGB | 215 | 13 | 2.005053 | 0210366,0210191,etc |
| cataclysmic variable | CV | 108 | 13 | 1.002888 | 0210416,0210432,etc |
| intergalactic medium | IGM | 148 | 13 | 2.002533 | 0210666,0210014,etc |
| black hole | BH | 282 | 13 | 2.004432 | 0210431,0210079,etc |
| near infrared | NIR | 118 | 12 | 2.002317 | 0210182,0210144,etc |
| luminosity function | LF | 324 | 12 | 1.004846 | 0210070,0210616,etc |
| equivalent width | EW | 115 | 11 | 2.003785 | 0210391,0210301,etc |
| supernova remnant | SNR | 144 | 11 | 2.004231 | 0210226,0210408,etc |
| very large array | VLA | 61 | 11 | 1.001406 | 0210529,0210031,etc |
| far infrared | FIR | 82 | 10 | 2.000886 | 0210144,0210510,etc |
| main sequence | MS | 123 | 10 | 2.002884 | 0210070,0210160,etc |
| white dwarf | WD | 284 | 10 | 1.004222 | 0210191,0210384,etc |
| wolf rayet | WR | 182 | 9 | 2.006191 | 0210312,0210615,etc |
| low surface brightness | LSB | 287 | 9 | 1.00285 | 0210104,0210658,etc |
| ultraviolet | UV | 89 | 9 | 2.002367 | 0210160,0210645,etc |
| very long baseline array | VLBA | 69 | 9 | 2.002137 | 0210555,0210031,etc |
| infrared | IR | 329 | 8 | 2.005101 | 0210355,0210289,etc |
| signal to noise | S/N | 36 | 8 | 2.000836 | 0210635,0210343,etc |
| large magellanic cloud | LMC | 283 | 8 | 2.008617 | 0210253,0210615,etc |
| star formation history | SFH | 59 | 8 | 2.001348 | 0210104,0210260,etc |
| globular cluster | GC | 313 | 8 | 2.012614 | 0210528,0210466,etc |
| colour magnitude diagram | CMD | 51 | 8 | 1.001744 | 0210064,0210200,etc |
| neutron star | NS | 379 | 8 | 2.010576 | 0210218,0210688,etc |
| inverse compton | IC | 78 | 8 | 2.00112 | 0210203,0210297,etc |
| low mass x ray binary | LMXB | 119 | 7 | 1.004521 | 0210416,0210506,etc |
| singular isothermal sphere | SIS | 63 | 7 | 2.001652 | 0210182,0210107,etc |
| small magellanic cloud | SMC | 140 | 7 | 1.002362 | 0210397,0210253,etc |
| broad line region | BLR | 297 | 7 | 2.008638 | 0210115,0210548,etc |
| horizontal branch | HB | 166 | 7 | 2.005578 | 0210163,0210178,etc |
| new technology telescope | NTT | 16 | 7 | 1.000784 | 0210432,0210351,etc |
| kolmogorov smirnov | KS | 23 | 7 | 1.000219 | 0210401,0210399,etc |
| zero age main sequence | ZAMS | 21 | 7 | 1.000477 | 0210128,0210065,etc |
| quasi periodic oscillation | QPO | 130 | 7 | 2.004583 | 0210114,0210538,etc |
| local group | LG | 26 | 7 | 1.000512 | 0210068,0210454,etc |
| digitized sky survey | DSS | 13 | 6 | 1.000205 | 0210101,0210313,etc |
| planetary nebula | PN | 84 | 6 | 2.003154 | 0210255,0210615,etc |
| very long baseline interferometry | VLBI | 50 | 6 | 2.002088 | 0210214,0210194,etc |
| australia telescope compact array | ATCA | 29 | 6 | 2.00045 | 0210615,0210075,etc |
| color magnitude diagram | CMD | 77 | 6 | 1.002419 | 0210367,0210278,etc |
| cosmic ray | CR | 291 | 6 | 2.003138 | 0210297,0210480,etc |
| smoothed particle hydrodynamics | SPH | 12 | 5 | 1.000294 | 0210614,0210655,etc |
| advection dominated accretion flow | ADAF | 19 | 5 | 1.000379 | 0210391,0210114,etc |
| large scale structure | LSS | 33 | 5 | 1.000882 | 0210007,0210253,etc |
| integrated sachs wolfe | ISW | 36 | 5 | 2.002457 | 0210209,0210365,etc |
| cosmic microwave background radiation | CMB | 131 | 5 | 2.002412 | 0210209,0210253,etc |
| dark matter | DM | 55 | 5 | 1.00118 | 0210253,0210079,etc |
| red giant branch | RGB | 153 | 5 | 2.001771 | 0210027,0210064,etc |
| magnetohydrodynamic | MHD | 83 | 5 | 1.002521 | 0210518,0210571,etc |
| intracluster medium | ICM | 140 | 5 | 1.002681 | 0210410,0210431,etc |
| very large telescope | VLT | 24 | 5 | 1.000837 | 0210506,0210612,etc |
| european southern observatory | ESO | 15 | 5 | 2.000496 | 0210351,0210016,etc |
| infrared space observatory | ISO | 79 | 5 | 2.0014 | 0210657,0210289,etc |
| cosmic infrared background | CIRB | 74 | 5 | 1.003099 | 0210030,0210084,etc |
| star formation | SF | 88 | 5 | 2.002188 | 0210263,0210200,etc |
| two micron all sky survey | 2MASS | 59 | 5 | 2.001037 | 0210347,0210287,etc |
| tully fisher | TF | 92 | 5 | 2.002274 | 0210495,0210291,etc |
| all sky monitor | ASM | 46 | 5 | 1.0019 | 0210224,0210241,etc |
| field of view | FOV | 27 | 5 | 2.001367 | 0210091,0210213,etc |
| wide field camera | WFC | 11 | 4 | 1.000293 | 0210416,0210616,etc |
| isaac newton telescope | INT | 11 | 4 | 1.000399 | 0210416,0210230,etc |
| magnetohydrodynamics | MHD | 73 | 4 | 2.001578 | 0210045,0210422,etc |
| interstellar radiation field | ISRF | 28 | 4 | 1.000571 | 0210182,0210657,etc |
| kitt peak national observatory | KPNO | 11 | 4 | 1.000475 | 0210118,0210050,etc |
| 2df galaxy redshift survey | 2dFGRS | 38 | 4 | 1.001248 | 0210118,0210471,etc |
| south african astronomical observatory | SAAO | 9 | 4 | 1.000501 | 0210397,0210458,etc |
| proportional counter array | PCA | 21 | 4 | 1.000816 | 0210397,0210513,etc |
| rosat all sky survey | RASS | 34 | 4 | 1.000885 | 0210101,0210067,etc |
| ultra luminous infrared galaxy | ULIRG | 17 | 4 | 1.000681 | 0210197,0210228,etc |
| synchrotron self compton | SSC | 11 | 4 | 1.000131 | 0210115,0210203,etc |
| high surface brightness | HSB | 65 | 4 | 1.00083 | 0210104,0210454,etc |
| equation of state | EoS | 43 | 4 | 2.0026 | 0210506,0210018,etc |
| radial velocity | RV | 64 | 4 | 1.00337 | 0210004,0210621,etc |
| tidal dwarf galaxy | TDG | 69 | 4 | 2.002554 | 0210014,0210270,etc |
| compton gamma ray observatory | CGRO | 36 | 4 | 1.002002 | 0210220,0210297,etc |
| adaptive optics | AO | 24 | 4 | 2.003377 | 0210271,0210216,etc |
| wide field and planetary camera 2 | WFPC2 | 26 | 4 | 1.002429 | 0210503,0210643,etc |
| dwarf spheroidal | dSph | 28 | 4 | 1.000499 | 0210098,0210287,etc |
| millisecond pulsar | MSP | 103 | 4 | 2.01076 | 0210029,0210010,etc |
| supermassive black hole | SMBH | 34 | 4 | 1.000755 | 0210044,0210184,etc |
| grand unified theory | GUT | 18 | 4 | 2.000341 | 0210184,0210345,etc |
| extremely red object | ERO | 106 | 4 | 1.00377 | 0210509,0210146,etc |
| infrared processing and analysis center | IPAC | 5 | 3 | 1.000143 | 0210566,0210084,etc |
| kuiper belt object | KBO | 24 | 3 | 2.000821 | 0210416,0210118,etc |
| james clerk maxwell telescope | JCMT | 11 | 3 | 1.000157 | 0210182,0210145,etc |
| nrao vla sky survey | NVSS | 4 | 3 | 1.000088 | 0210182,0210050,etc |
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