| cosmic microwave background | CMB | 421 | 41 | 1.002319 | 0505505,0505381,etc |
| interstellar medium | ISM | 287 | 36 | 1.001981 | 0505512,0505590,etc |
| active galactic nucleus | AGN | 814 | 32 | 1.006253 | 0505482,0505128,etc |
| spectral energy distribution | SED | 329 | 30 | 2.003104 | 0505224,0505482,etc |
| gamma ray burst | GRB | 1058 | 26 | 2.008166 | 0505181,0505278,etc |
| supernova | SN | 893 | 25 | 2.008867 | 0505512,0505590,etc |
| star formation rate | SFR | 333 | 24 | 1.001995 | 0505590,0505181,etc |
| sloan digital sky survey | SDSS | 506 | 24 | 1.004445 | 0505473,0505446,etc |
| cold dark matter | CDM | 187 | 22 | 1.00246 | 0505381,0505390,etc |
| point spread function | PSF | 461 | 21 | 1.003389 | 0505455,0505489,etc |
| initial mass function | IMF | 89 | 18 | 1.000912 | 0505512,0505473,etc |
| supernova remnant | SNR | 479 | 16 | 2.006141 | 0505512,0505145,etc |
| full width at half maximum | FWHM | 92 | 16 | 2.00055 | 0505069,0505070,etc |
| nasa/ipac extragalactic database | NED | 20 | 16 | 1.000134 | 0505049,0505370,etc |
| equivalent width | EW | 156 | 14 | 2.002726 | 0505247,0505016,etc |
| asymptotic giant branch | AGB | 242 | 13 | 1.002908 | 0505224,0505622,etc |
| intergalactic medium | IGM | 161 | 13 | 2.00409 | 0505590,0505358,etc |
| very large array | VLA | 87 | 12 | 1.001726 | 0505433,0505145,etc |
| lyman break galaxy | LBG | 220 | 11 | 2.003402 | 0505015,0505590,etc |
| neutron star | NS | 184 | 11 | 2.002164 | 0505181,0505287,etc |
| black hole | BH | 216 | 11 | 1.004713 | 0505287,0505482,etc |
| kolmogorov smirnov | KS | 55 | 11 | 2.000612 | 0505526,0505092,etc |
| signal to noise ratio | SNR | 52 | 11 | 2.0007 | 0505100,0505334,etc |
| signal to noise | S/N | 46 | 10 | 2.000905 | 0505208,0505016,etc |
| hubble space telescope | HST | 74 | 10 | 1.001352 | 0505208,0505031,etc |
| red giant branch | RGB | 211 | 10 | 2.004157 | 0505622,0505378,etc |
| wide field camera | WFC | 42 | 9 | 2.001814 | 0505015,0505622,etc |
| advanced camera for surveys | ACS | 176 | 9 | 2.001451 | 0505622,0505031,etc |
| near infrared | NIR | 61 | 9 | 1.001153 | 0505443,0505101,etc |
| ultraviolet | UV | 304 | 9 | 1.004102 | 0505126,0505416,etc |
| globular cluster | GC | 355 | 9 | 2.004433 | 0505378,0505201,etc |
| intracluster medium | ICM | 79 | 9 | 1.001966 | 0505415,0505274,etc |
| star formation history | SFH | 86 | 8 | 2.001579 | 0505473,0505622,etc |
| field of view | FOV | 48 | 8 | 1.000469 | 0505049,0505039,etc |
| equation of state | Eq | 124 | 8 | 2.002394 | 0505329,0505437,etc |
| dark matter | DM | 112 | 8 | 2.002239 | 0505544,0505186,etc |
| luminosity function | LF | 203 | 8 | 2.004976 | 0505544,0505496,etc |
| anomalous x ray pulsar | AXP | 42 | 8 | 1.0009 | 0505039,0505066,etc |
| all sky monitor | ASM | 56 | 8 | 1.001895 | 0505325,0505275,etc |
| large magellanic cloud | LMC | 95 | 7 | 2.002426 | 0505512,0505066,etc |
| rossi x ray timing explorer | RXTE | 87 | 7 | 2.000608 | 0505255,0505402,etc |
| proportional counter array | PCA | 81 | 7 | 2.001093 | 0505255,0505275,etc |
| position angle | PA | 115 | 7 | 1.001567 | 0505190,0505042,etc |
| nordic optical telescope | NOT | 15 | 6 | 1.000359 | 0505489,0505443,etc |
| cosmic ray | CR | 193 | 6 | 2.00796 | 0505590,0505247,etc |
| quasi periodic oscillation | QPO | 137 | 6 | 2.006441 | 0505255,0505070,etc |
| wilkinson microwave anisotropy probe | WMAP | 51 | 6 | 1.001564 | 0505381,0505390,etc |
| main sequence | MS | 212 | 6 | 2.003898 | 0505622,0505347,etc |
| low mass x ray binary | LMXB | 106 | 6 | 2.002501 | 0505454,0505408,etc |
| inverse compton | IC | 45 | 6 | 1.001582 | 0505145,0505398,etc |
| very long baseline array | VLBA | 73 | 6 | 2.000762 | 0505370,0505141,etc |
| very large telescope | VLT | 35 | 6 | 2.000688 | 0505480,0505261,etc |
| high mass x ray binary | HMXB | 36 | 6 | 1.001132 | 0505275,0505352,etc |
| planetary nebula | PN | 166 | 6 | 1.007467 | 0505246,0505269,etc |
| space telescope imaging spectrograph | STIS | 114 | 6 | 2.001254 | 0505125,0505586,etc |
| advanced ccd imaging spectrometer | ACIS | 23 | 5 | 2.001038 | 0505461,0505193,etc |
| adaptive optics | AO | 254 | 5 | 2.003815 | 0505208,0505086,etc |
| soft gamma ray repeater | SGR | 29 | 5 | 2.001373 | 0505255,0505193,etc |
| small magellanic cloud | SMC | 66 | 5 | 1.002458 | 0505446,0505275,etc |
| local standard of rest | LSR | 31 | 5 | 1.001505 | 0505057,0505485,etc |
| dwarf spheroidal | dSph | 141 | 5 | 2.005941 | 0505064,0505186,etc |
| color magnitude diagram | CMD | 68 | 5 | 1.001293 | 0505622,0505399,etc |
| young stellar object | YSO | 75 | 5 | 2.001333 | 0505126,0505433,etc |
| european photon imaging camera | EPIC | 28 | 5 | 1.000435 | 0505482,0505332,etc |
| wolf rayet | WR | 51 | 5 | 2.000557 | 0505189,0505547,etc |
| far infrared | FIR | 14 | 5 | 1.00029 | 0505128,0505101,etc |
| multi element radio linked interferometer network | MERLIN | 43 | 5 | 2.003384 | 0505370,0505141,etc |
| broad line region | BLR | 16 | 5 | 1.000137 | 0505587,0505141,etc |
| two micron all sky survey | 2MASS | 98 | 5 | 2.002056 | 0505079,0505334,etc |
| galactic center | GC | 132 | 5 | 2.003885 | 0505555,0505244,etc |
| gravitational wave | GW | 87 | 4 | 2.005268 | 0505600,0505628,etc |
| isaac newton telescope | INT | 34 | 4 | 2.000717 | 0505015,0505269,etc |
| hubble deep field | HDF | 39 | 4 | 1.001762 | 0505015,0505528,etc |
| luminous blue variable | LBV | 91 | 4 | 1.002337 | 0505512,0505505,etc |
| broad absorption line | BAL | 13 | 4 | 1.000485 | 0505489,0505062,etc |
| full width half maximum | FWHM | 6 | 4 | 1.000142 | 0505381,0505271,etc |
| local thermodynamic equilibrium | LTE | 47 | 4 | 1.000564 | 0505126,0505247,etc |
| high energy astrophysics science archive research center | HEASARC | 5 | 4 | 1.000082 | 0505145,0505402,etc |
| astrophysical research consortium | ARC | 6 | 4 | 1.000177 | 0505385,0505334,etc |
| ultra high energy cosmic rays | UHECR | 41 | 4 | 1.003462 | 0505462,0505267,etc |
| australia telescope compact array | ATCA | 41 | 4 | 2.000747 | 0505526,0505066,etc |
| pulsar wind nebula | PWN | 15 | 4 | 1.000624 | 0505332,0505392,etc |
| astronomical image processing system | AIPS | 16 | 4 | 1.001122 | 0505370,0505148,etc |
| x ray telescope | XRT | 66 | 4 | 1.00178 | 0505480,0505035,etc |
| narrow line region | NLR | 22 | 4 | 2.001047 | 0505141,0505127,etc |
| green bank telescope | GBT | 17 | 4 | 1.00042 | 0505141,0505555,etc |
| ultra high energy | UHE | 41 | 4 | 1.002023 | 0505398,0505220,etc |
| very high energy | VHE | 13 | 4 | 1.001171 | 0505204,0505335,etc |
| very long baseline interferometry | VLBI | 29 | 4 | 2.003999 | 0505468,0505246,etc |
| particle mesh | PM | 175 | 4 | 2.001715 | 0505182,0505010,etc |
| pre main sequence | PMS | 63 | 4 | 2.001938 | 0505295,0505162,etc |
| magnetohydrodynamic | MHD | 68 | 4 | 1.002811 | 0505013,0505575,etc |
| high velocity cloud | HVC | 120 | 4 | 2.005193 | 0505399,0505594,etc |
| smoothed particle hydrodynamics | SPH | 156 | 4 | 2.003511 | 0505008,0505289,etc |
| simple stellar population | SSP | 30 | 4 | 1.000494 | 0505108,0505305,etc |
| planetary nebulae | PN | 63 | 4 | 2.007196 | 0505092,0505408,etc |
| supermassive black hole | SMBH | 53 | 4 | 2.002176 | 0505137,0505435,etc |
| westerbork synthesis radio telescope | WSRT | 20 | 4 | 2.000672 | 0505055,0505397,etc |
| submillimetre common user bolometer array | SCUBA | 62 | 4 | 2.001017 | 0505557,0505190,etc |
| x ray flashe | XRF | 80 | 4 | 2.005449 | 0505152,0505156,etc |
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