| active galactic nucleus | AGN | 1492 | 43 | 1.007257 | 0507072,0507207,etc |
| spectral energy distribution | SED | 445 | 42 | 1.001417 | 0507461,0507207,etc |
| cosmic microwave background | CMB | 671 | 40 | 2.002985 | 0507068,0507524,etc |
| sloan digital sky survey | SDSS | 400 | 38 | 1.001892 | 0507154,0507719,etc |
| point spread function | PSF | 311 | 31 | 2.001479 | 0507538,0507007,etc |
| interstellar medium | ISM | 361 | 30 | 1.002428 | 0507031,0507478,etc |
| gamma ray burst | GRB | 824 | 23 | 2.00667 | 0507311,0507343,etc |
| supernova | SN | 772 | 20 | 2.008137 | 0507031,0507478,etc |
| hubble space telescope | HST | 153 | 20 | 1.000662 | 0507658,0507158,etc |
| initial mass function | IMF | 339 | 20 | 2.00334 | 0507687,0507239,etc |
| cold dark matter | CDM | 177 | 19 | 1.003203 | 0507154,0507339,etc |
| field of view | FOV | 95 | 18 | 2.001467 | 0507515,0507101,etc |
| intergalactic medium | IGM | 181 | 18 | 2.000972 | 0507719,0507677,etc |
| star formation rate | SFR | 375 | 17 | 1.002688 | 0507658,0507719,etc |
| full width at half maximum | FWHM | 79 | 17 | 1.000385 | 0507037,0507453,etc |
| supernova remnant | SNR | 322 | 16 | 1.002892 | 0507111,0507031,etc |
| signal to noise ratio | SNR | 75 | 15 | 1.000621 | 0507007,0507587,etc |
| nasa/ipac extragalactic database | NED | 30 | 15 | 2.000249 | 0507669,0507658,etc |
| advanced camera for surveys | ACS | 357 | 14 | 1.002921 | 0507426,0507306,etc |
| luminosity function | LF | 443 | 13 | 2.004758 | 0507286,0507719,etc |
| equation of state | EoS | 188 | 12 | 2.002877 | 0507135,0507243,etc |
| black hole | BH | 394 | 12 | 2.003302 | 0507304,0507323,etc |
| asymptotic giant branch | AGB | 189 | 11 | 1.003501 | 0507191,0507415,etc |
| inverse compton | IC | 79 | 11 | 2.001813 | 0507068,0507141,etc |
| infrared | IR | 178 | 11 | 2.002483 | 0507304,0507323,etc |
| lyman break galaxy | LBG | 346 | 11 | 2.008316 | 0507719,0507685,etc |
| red giant branch | RGB | 214 | 10 | 2.002795 | 0507044,0507286,etc |
| two micron all sky survey | 2MASS | 132 | 10 | 2.000914 | 0507416,0507640,etc |
| kolmogorov smirnov | KS | 46 | 10 | 2.000517 | 0507470,0507640,etc |
| low mass x ray binary | LMXB | 52 | 10 | 2.000741 | 0507470,0507221,etc |
| equivalent width | EW | 146 | 10 | 2.003923 | 0507122,0507245,etc |
| wilkinson microwave anisotropy probe | WMAP | 78 | 10 | 2.001858 | 0507439,0507270,etc |
| ultraviolet | UV | 352 | 10 | 2.003871 | 0507106,0507377,etc |
| near infrared | NIR | 147 | 10 | 2.002479 | 0507320,0507676,etc |
| neutron star | NS | 273 | 9 | 2.00736 | 0507304,0507235,etc |
| wolf rayet | WR | 286 | 9 | 2.002591 | 0507304,0507391,etc |
| astrophysical research consortium | ARC | 11 | 9 | 1.000096 | 0507144,0507059,etc |
| max planck institute for astronomy | MPIA | 9 | 9 | 1.000098 | 0507144,0507059,etc |
| max planck institute for astrophysics | MPA | 11 | 9 | 1.000101 | 0507144,0507059,etc |
| intracluster medium | ICM | 94 | 9 | 2.001453 | 0507037,0507643,etc |
| european southern observatory | ESO | 45 | 9 | 1.000837 | 0507024,0507320,etc |
| dark matter | DM | 253 | 9 | 1.003501 | 0507448,0507643,etc |
| horizontal branch | HBA | 470 | 8 | 2.006399 | 0507044,0507598,etc |
| zero age main sequence | ZAMS | 53 | 8 | 2.001093 | 0507659,0507239,etc |
| smoothed particle hydrodynamics | SPH | 92 | 8 | 2.001361 | 0507719,0507480,etc |
| space telescope imaging spectrograph | STIS | 33 | 8 | 2.000621 | 0507037,0507373,etc |
| radial velocity | RV | 151 | 8 | 2.004408 | 0507548,0507024,etc |
| polycyclic aromatic hydrocarbon | PAH | 132 | 8 | 2.007591 | 0507640,0507008,etc |
| surface detector | SD | 66 | 8 | 1.002854 | 0507590,0507402,etc |
| large scale structure | LSS | 94 | 8 | 1.0016 | 0507503,0507346,etc |
| cosmic ray | CR | 117 | 7 | 2.003552 | 0507111,0507031,etc |
| globular cluster | GC | 410 | 7 | 2.010951 | 0507044,0507470,etc |
| very high energy | VHE | 74 | 7 | 1.003265 | 0507207,0507549,etc |
| wide field camera | WFC | 34 | 7 | 1.000901 | 0507286,0507247,etc |
| infrared space observatory | ISO | 27 | 7 | 1.000505 | 0507669,0507594,etc |
| ultraluminous infrared galaxy | ULIRG | 138 | 7 | 1.002029 | 0507037,0507240,etc |
| fluorescence detector | FD | 84 | 7 | 2.004086 | 0507132,0507103,etc |
| monte carlo | MC | 41 | 7 | 1.002722 | 0507483,0507267,etc |
| wide field planetary camera 2 | WFPC2 | 87 | 7 | 2.001156 | 0507187,0507706,etc |
| ultra high energy cosmic ray | UHECR | 128 | 6 | 2.00334 | 0507484,0507657,etc |
| diffusive shock acceleration | DSA | 75 | 6 | 2.002654 | 0507111,0507031,etc |
| two dimensional | 2D | 133 | 6 | 1.001257 | 0507135,0507095,etc |
| milky way | MW | 25 | 6 | 1.000188 | 0507072,0507364,etc |
| small magellanic cloud | SMC | 90 | 6 | 2.003742 | 0507072,0507719,etc |
| dark energy | DE | 123 | 6 | 2.004685 | 0507067,0507555,etc |
| color magnitude diagram | CMD | 68 | 6 | 2.003504 | 0507079,0507042,etc |
| blue compact dwarf | BCD | 144 | 6 | 2.003956 | 0507658,0507653,etc |
| particle in cell | PIC | 21 | 6 | 1.000779 | 0507339,0507109,etc |
| high mass x ray binary | HMXB | 23 | 6 | 1.000965 | 0507549,0507012,etc |
| quasi periodic oscillation | QPO | 168 | 6 | 2.00367 | 0507097,0507511,etc |
| planetary nebula | PN | 155 | 6 | 2.003933 | 0507204,0507050,etc |
| adaptive optics | AO | 18 | 6 | 1.000423 | 0507071,0507299,etc |
| magnetohydrodynamics | MHD | 74 | 6 | 2.000682 | 0507328,0507291,etc |
| general relativity | GR | 52 | 5 | 2.002388 | 0507135,0507332,etc |
| power spectral density | PSD | 47 | 5 | 1.001157 | 0507389,0507562,etc |
| dwarf spheroidal | dSph | 116 | 5 | 2.006221 | 0507044,0507154,etc |
| full width half maximum | FWHM | 18 | 5 | 1.000263 | 0507079,0507247,etc |
| neutron stars | NS | 28 | 5 | 1.001479 | 0507697,0507343,etc |
| big bang nucleosynthesis | BBN | 74 | 5 | 2.00446 | 0507439,0507106,etc |
| signal to noise | S/N | 72 | 5 | 2.000965 | 0507286,0507214,etc |
| position angle | PA | 25 | 5 | 1.000331 | 0507658,0507612,etc |
| white dwarf | WD | 101 | 5 | 1.001518 | 0507695,0507239,etc |
| great observatories origins deep survey | GOODS | 113 | 5 | 1.002977 | 0507719,0507504,etc |
| large magellanic cloud | LMC | 76 | 5 | 1.002286 | 0507343,0507554,etc |
| galactic center | GC | 29 | 5 | 1.003031 | 0507343,0507448,etc |
| main sequence | MS | 211 | 5 | 2.001751 | 0507343,0507239,etc |
| far ultraviolet | far-UV | 53 | 5 | 2.000807 | 0507341,0507581,etc |
| broad absorption line | BAL | 42 | 5 | 1.000677 | 0507037,0507023,etc |
| infrared array camera | IRAC | 182 | 5 | 2.0023 | 0507685,0507673,etc |
| far infrared | FIR | 134 | 5 | 1.003772 | 0507240,0507039,etc |
| intermediate mass black hole | IMBH | 183 | 5 | 2.005884 | 0507562,0507365,etc |
| ultra high energy cosmic rays | UHECR | 58 | 5 | 1.005632 | 0507465,0507379,etc |
| very large telescope | VLT | 30 | 5 | 1.000423 | 0507071,0507094,etc |
| william herschel telescope | WHT | 69 | 5 | 1.001895 | 0507329,0507703,etc |
| wide field channel | WFC | 189 | 5 | 2.00208 | 0507521,0507394,etc |
| line of sight | LOS | 30 | 4 | 1.001058 | 0507111,0507214,etc |
| national aeronautics and space administration | NASA | 13 | 4 | 1.000163 | 0507319,0507185,etc |
| local thermodynamic equilibrium | LTE | 85 | 4 | 1.007923 | 0507461,0507182,etc |
| galaxy evolution explorer | GALEX | 15 | 4 | 2.001224 | 0507125,0507197,etc |
| all sky monitor | ASM | 25 | 4 | 2.001906 | 0507198,0507012,etc |
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