| spectral energy distribution | SED | 284 | 28 | 1.002193 | 0207515,0207166,etc |
| active galactic nucleus | AGN | 599 | 27 | 2.003605 | 0207021,0207562,etc |
| cosmic microwave background | CMB | 269 | 26 | 1.002964 | 0207600,0207271,etc |
| interstellar medium | ISM | 290 | 22 | 2.002195 | 0207460,0207562,etc |
| point spread function | PSF | 229 | 22 | 2.002612 | 0207426,0207058,etc |
| nasa/ipac extragalactic database | NED | 45 | 21 | 1.000256 | 0207562,0207003,etc |
| cold dark matter | CDM | 227 | 20 | 2.001843 | 0207377,0207285,etc |
| initial mass function | IMF | 141 | 20 | 1.002926 | 0207554,0207632,etc |
| supernova | SN | 805 | 19 | 2.008807 | 0207637,0207530,etc |
| gamma ray burst | GRB | 555 | 16 | 1.006415 | 0207149,0207609,etc |
| star formation rate | SFR | 80 | 13 | 2.003923 | 0207637,0207201,etc |
| hubble space telescope | HST | 120 | 13 | 1.005782 | 0207588,0207182,etc |
| signal to noise ratio | SNR | 92 | 12 | 1.001337 | 0207398,0207660,etc |
| color magnitude diagram | CMD | 118 | 11 | 1.003367 | 0207426,0207588,etc |
| large magellanic cloud | LMC | 497 | 11 | 2.005471 | 0207588,0207644,etc |
| intergalactic medium | IGM | 81 | 10 | 2.00076 | 0207562,0207111,etc |
| space telescope imaging spectrograph | STIS | 72 | 10 | 2.000934 | 0207426,0207559,etc |
| supernova remnant | SNR | 100 | 10 | 1.007182 | 0207502,0207530,etc |
| far infrared | FIR | 110 | 10 | 1.001136 | 0207264,0207238,etc |
| full width at half maximum | FWHM | 60 | 10 | 1.000665 | 0207264,0207176,etc |
| sloan digital sky survey | SDSS | 105 | 10 | 1.003136 | 0207285,0207571,etc |
| near infrared | NIR | 72 | 10 | 2.00127 | 0207501,0207605,etc |
| intracluster medium | ICM | 129 | 10 | 2.002378 | 0207147,0207183,etc |
| infrared space observatory | ISO | 242 | 10 | 1.005316 | 0207466,0207605,etc |
| cataclysmic variable | CV | 203 | 9 | 1.00344 | 0207438,0207426,etc |
| all sky monitor | ASM | 61 | 9 | 2.002235 | 0207007,0207587,etc |
| neutron star | NS | 157 | 9 | 2.003822 | 0207426,0207587,etc |
| asymptotic giant branch | AGB | 272 | 9 | 2.005468 | 0207619,0207245,etc |
| white dwarf | WD | 362 | 8 | 2.006687 | 0207426,0207623,etc |
| red giant branch | RGB | 70 | 8 | 2.003157 | 0207124,0207120,etc |
| weakly interacting massive particle | WIMP | 186 | 8 | 2.003727 | 0207670,0207308,etc |
| low mass x ray binary | LMXB | 61 | 8 | 1.001675 | 0207026,0207382,etc |
| infrared | IR | 221 | 8 | 2.002129 | 0207567,0207238,etc |
| black hole | BH | 227 | 8 | 2.006229 | 0207305,0207602,etc |
| young stellar object | YSO | 173 | 7 | 1.002731 | 0207515,0207614,etc |
| main sequence | MS | 231 | 7 | 2.00386 | 0207171,0207426,etc |
| luminosity function | LF | 157 | 7 | 2.002102 | 0207502,0207182,etc |
| equivalent width | EW | 49 | 7 | 1.001832 | 0207615,0207269,etc |
| globular cluster | GC | 126 | 7 | 2.010844 | 0207050,0207037,etc |
| inverse compton | IC | 60 | 7 | 2.002973 | 0207184,0207481,etc |
| very large array | VLA | 113 | 6 | 2.002384 | 0207201,0207018,etc |
| australia telescope compact array | ATCA | 83 | 6 | 2.001097 | 0207201,0207302,etc |
| position angle | PA | 139 | 6 | 1.003095 | 0207109,0207264,etc |
| far ultraviolet | FUV | 230 | 6 | 2.006287 | 0207264,0207040,etc |
| field of view | FOV | 34 | 6 | 1.000991 | 0207264,0207527,etc |
| broad absorption line | BAL | 154 | 6 | 2.00522 | 0207321,0207398,etc |
| tully fisher | TF | 87 | 6 | 1.001125 | 0207097,0207112,etc |
| proportional counter array | PCA | 67 | 6 | 2.001792 | 0207599,0207001,etc |
| big bang nucleosynthesis | BBN | 35 | 6 | 1.000842 | 0207286,0207297,etc |
| wolf rayet | W-R | 57 | 5 | 2.004671 | 0207171,0207300,etc |
| wide field planetary camera 2 | WFPC2 | 20 | 5 | 1.000324 | 0207426,0207588,etc |
| extreme ultraviolet | EUV | 64 | 5 | 2.001719 | 0207554,0207361,etc |
| luminous blue variable | LBV | 97 | 5 | 1.014009 | 0207542,0207310,etc |
| cold neutral medium | CNM | 469 | 5 | 2.004899 | 0207264,0207105,etc |
| high energy x ray timing experiment | HEXTE | 22 | 5 | 1.000976 | 0207003,0207599,etc |
| colour magnitude diagram | CMD | 198 | 5 | 2.005795 | 0207182,0207087,etc |
| wide field camera | WFC | 20 | 5 | 1.000459 | 0207182,0207555,etc |
| broad line region | BLR | 35 | 5 | 1.003126 | 0207571,0207249,etc |
| cosmic ray | CR | 318 | 4 | 2.006466 | 0207637,0207410,etc |
| european photon imaging camera | EPIC | 18 | 4 | 1.000492 | 0207171,0207296,etc |
| local standard of rest | LSR | 38 | 4 | 1.000854 | 0207562,0207530,etc |
| hard x ray | HXR | 194 | 4 | 1.007215 | 0207361,0207217,etc |
| two micron all sky survey | 2MASS | 39 | 4 | 1.006445 | 0207588,0207672,etc |
| cerro tololo inter american observatory | CTIO | 20 | 4 | 2.00089 | 0207588,0207504,etc |
| isaac newton telescope | INT | 21 | 4 | 1.000495 | 0207614,0207555,etc |
| william herschel telescope | WHT | 24 | 4 | 1.000328 | 0207587,0207026,etc |
| kolmogorov smirnov | KS | 10 | 4 | 1.000073 | 0207659,0207597,etc |
| polycyclic aromatic hydrocarbon | PAH | 14 | 4 | 1.000443 | 0207264,0207379,etc |
| dispersion measure | DM | 108 | 4 | 1.002323 | 0207302,0207156,etc |
| horizontal branch | HB | 219 | 4 | 2.008495 | 0207037,0207211,etc |
| zero age horizontal branch | ZAHB | 20 | 4 | 2.001393 | 0207037,0207343,etc |
| zero age main sequence | ZAMS | 17 | 4 | 1.000557 | 0207348,0207121,etc |
| hot ionized medium | HIM | 45 | 4 | 2.000323 | 0207105,0207521,etc |
| sunyaev zeldovich | SZ | 18 | 4 | 2.00456 | 0207147,0207443,etc |
| jacobus kapteyn telescope | JKT | 15 | 4 | 1.001053 | 0207478,0207258,etc |
| goddard high resolution spectrograph | GHRS | 22 | 4 | 1.000674 | 0207040,0207579,etc |
| singular isothermal sphere | SIS | 17 | 4 | 2.000453 | 0207276,0207268,etc |
| star formation | SF | 180 | 4 | 2.002324 | 0207258,0207314,etc |
| full width half maximum | FWHM | 13 | 4 | 1.000461 | 0207432,0207325,etc |
| low luminosity agn | LLAGN | 38 | 4 | 2.001584 | 0207207,0207091,etc |
| nordic optical telescope | NOT | 14 | 4 | 1.000567 | 0207236,0207173,etc |
| advection dominated accretion flow | ADAF | 57 | 4 | 2.004167 | 0207154,0207081,etc |
| local thermodynamic equilibrium | LTE | 37 | 4 | 1.001634 | 0207489,0207287,etc |
| classical t tauri star | CTTS | 18 | 3 | 1.000104 | 0207515,0207348,etc |
| pre main sequence | PMS | 38 | 3 | 2.002347 | 0207515,0207171,etc |
| sunyaev zel'dovich | SZ | 101 | 3 | 2.005765 | 0207600,0207218,etc |
| warm ionized medium | WIM | 19 | 3 | 2.00027 | 0207460,0207105,etc |
| local interstellar cloud | LIC | 14 | 3 | 1.000071 | 0207460,0207579,etc |
| signal to noise | S/N | 6 | 3 | 1.000093 | 0207171,0207451,etc |
| quasi periodic oscillation | QPO | 74 | 3 | 2.00593 | 0207007,0207386,etc |
| probability density function | PDF | 25 | 3 | 2.001018 | 0207007,0207568,etc |
| high velocity cloud | HVC | 281 | 3 | 2.003404 | 0207562,0207040,etc |
| united kingdom infrared telescope | UKIRT | 7 | 3 | 1.000408 | 0207271,0207587,etc |
| james clerk maxwell telescope | JCMT | 8 | 3 | 2.000693 | 0207271,0207322,etc |
| particle physics and astronomy research council | PPARC | 7 | 3 | 1.00024 | 0207329,0207489,etc |
| inverse compton scattering | ICS | 38 | 3 | 1.000619 | 0207361,0207638,etc |
| x ray background | XRB | 24 | 3 | 1.000407 | 0207166,0207073,etc |
| supernova remnants | SNR | 13 | 3 | 2.000961 | 0207058,0207428,etc |
| planetary nebula | PN | 284 | 3 | 2.006988 | 0207058,0207447,etc |
| dark matter | DM | 100 | 3 | 2.003386 | 0207073,0207487,etc |
|