| active galactic nucleus | AGN | 259 | 30 | 2.001872 | 9907378,9907395,etc |
| initial mass function | IMF | 201 | 17 | 1.004152 | 9907198,9907375,etc |
| cosmic microwave background | CMB | 517 | 17 | 1.003883 | 9907276,9907094,etc |
| point spread function | PSF | 221 | 16 | 2.003361 | 9907119,9907378,etc |
| interstellar medium | ISM | 283 | 15 | 1.002757 | 9907171,9907153,etc |
| cold dark matter | CDM | 169 | 14 | 2.003591 | 9907299,9907094,etc |
| very large array | VLA | 96 | 13 | 2.001645 | 9907111,9907436,etc |
| star formation rate | SFR | 148 | 13 | 2.002125 | 9907171,9907378,etc |
| asymptotic giant branch | AGB | 185 | 13 | 2.00312 | 9907275,9907241,etc |
| spectral energy distribution | SED | 129 | 13 | 1.001248 | 9907037,9907139,etc |
| hubble space telescope | HST | 106 | 12 | 2.000766 | 9907310,9907013,etc |
| nasa/ipac extragalactic database | NED | 15 | 10 | 1.000176 | 9907009,9907401,etc |
| gamma ray burst | GRB | 468 | 10 | 2.006751 | 9907365,9907332,etc |
| supernova | SN | 590 | 9 | 2.00891 | 9907426,9907345,etc |
| hubble deep field | HDF | 53 | 9 | 2.003978 | 9907123,9907436,etc |
| red giant branch | RGB | 117 | 9 | 2.001309 | 9907073,9907389,etc |
| intergalactic medium | IGM | 153 | 8 | 1.001778 | 9907299,9907123,etc |
| rossi x ray timing explorer | RXTE | 59 | 7 | 1.001771 | 9907383,9907352,etc |
| full width at half maximum | FWHM | 45 | 7 | 1.000718 | 9907113,9907188,etc |
| low mass x ray binary | LMXB | 83 | 6 | 2.002855 | 9907111,9907153,etc |
| big bang nucleosynthesis | BBN | 24 | 6 | 2.002592 | 9907171,9907421,etc |
| signal to noise ratio | SNR | 26 | 6 | 2.000374 | 9907046,9907356,etc |
| equivalent width | EW | 86 | 6 | 1.002205 | 9907135,9907114,etc |
| luminosity function | LF | 69 | 6 | 1.003063 | 9907160,9907178,etc |
| large magellanic cloud | LMC | 139 | 6 | 2.006655 | 9907369,9907246,etc |
| far infrared | FIR | 171 | 6 | 2.004312 | 9907039,9907239,etc |
| supernova remnant | SNR | 111 | 6 | 2.002222 | 9907248,9907110,etc |
| smoothed particle hydrodynamics | SPH | 71 | 5 | 2.002597 | 9907375,9907047,etc |
| proportional counter array | PCA | 42 | 5 | 2.000958 | 9907383,9907352,etc |
| equation of state | EoS | 141 | 5 | 2.00217 | 9907231,9907006,etc |
| small magellanic cloud | SMC | 112 | 5 | 1.002217 | 9907369,9907398,etc |
| color magnitude diagram | CMD | 158 | 5 | 2.002664 | 9907073,9907104,etc |
| main sequence | MS | 66 | 5 | 2.001466 | 9907073,9907048,etc |
| wolf rayet | WR | 218 | 4 | 2.008524 | 9907164,9907275,etc |
| probability distribution function | PDF | 45 | 4 | 2.002707 | 9907404,9907403,etc |
| near infrared | NIR | 75 | 4 | 2.001388 | 9907379,9907290,etc |
| narrow line region | NLR | 29 | 4 | 2.004129 | 9907188,9907373,etc |
| einstein de sitter | EdS | 29 | 4 | 1.000365 | 9907095,9907268,etc |
| all sky monitor | ASM | 121 | 4 | 2.002917 | 9907114,9907332,etc |
| high resolution imager | HRI | 76 | 4 | 2.00162 | 9907090,9907186,etc |
| james clerk maxwell telescope | JCMT | 7 | 4 | 1.000084 | 9907139,9907022,etc |
| narrow field instruments | NFI | 21 | 4 | 2.00081 | 9907332,9907265,etc |
| center of excellence | COE | 4 | 4 | 1.000076 | 9907109,9907108,etc |
| colour magnitude diagram | CMD | 63 | 4 | 1.001977 | 9907029,9907200,etc |
| horizontal branch | HB | 191 | 4 | 1.006065 | 9907073,9907394,etc |
| dwarf spheroidal | dSph | 62 | 4 | 2.001775 | 9907073,9907104,etc |
| infrared | IR | 43 | 4 | 2.005749 | 9907254,9907240,etc |
| kitt peak national observatory | KPNO | 17 | 4 | 1.000402 | 9907403,9907058,etc |
| galactic cosmic ray | GCR | 90 | 3 | 2.004279 | 9907171,9907275,etc |
| atacama large millimeter array | ALMA | 5 | 3 | 1.000262 | 9907276,9907074,etc |
| intracluster medium | ICM | 23 | 3 | 2.000654 | 9907299,9907069,etc |
| inner lindblad resonance | ILR | 29 | 3 | 2.00051 | 9907267,9907444,etc |
| nasa extragalactic database | NED | 5 | 3 | 1.000093 | 9907009,9907280,etc |
| owens valley radio observatory | OVRO | 10 | 3 | 1.000527 | 9907383,9907397,etc |
| polycyclic aromatic hydrocarbon | PAH | 34 | 3 | 1.000905 | 9907307,9907255,etc |
| luminous blue variable | LBV | 3 | 3 | 1.000086 | 9907400,9907310,etc |
| proportional counter unit | PCU | 14 | 3 | 1.000243 | 9907352,9907114,etc |
| high frequency instrument | HFI | 8 | 3 | 1.000565 | 9907094,9907039,etc |
| young stellar object | YSO | 19 | 3 | 2.000629 | 9907293,9907277,etc |
| star formation history | SFH | 20 | 3 | 2.000216 | 9907396,9907156,etc |
| digitized sky survey | DSS | 13 | 3 | 1.00038 | 9907401,9907014,etc |
| zero age main sequence | ZAMS | 12 | 3 | 1.000078 | 9907439,9907048,etc |
| faint object spectrograph | FOS | 14 | 3 | 1.000551 | 9907123,9907082,etc |
| intermediate frequency | IF | 13 | 3 | 1.000682 | 9907282,9907215,etc |
| burst and transient source experiment | BATSE | 32 | 3 | 2.000859 | 9907173,9907235,etc |
| black hole | BH | 185 | 3 | 2.002201 | 9907241,9907095,etc |
| australia telescope compact array | ATCA | 8 | 3 | 1.000229 | 9907233,9907069,etc |
| tully fisher | TF | 134 | 3 | 2.003171 | 9907047,9907058,etc |
| neutron star | NS | 37 | 3 | 1.000654 | 9907365,9907071,etc |
| white dwarf | WD | 129 | 3 | 2.004377 | 9907365,9907386,etc |
| modified newtonian dynamics | MOND | 136 | 3 | 1.006658 | 9907326,9907409,etc |
| cerro tololo interamerican observatory | CTIO | 31 | 3 | 2.000568 | 9907369,9907179,etc |
| extragalactic background light | EBL | 65 | 3 | 2.00339 | 9907268,9907022,etc |
| wide field camera | WFC | 16 | 3 | 1.000475 | 9907332,9907265,etc |
| low energy concentrator spectrometer | LECS | 26 | 3 | 1.00175 | 9907377,9907158,etc |
| blue horizontal branch | BHB | 22 | 3 | 2.001935 | 9907200,9907156,etc |
| extremely red object | ERO | 94 | 3 | 2.008132 | 9907178,9907022,etc |
| discrete correlation function | DCF | 27 | 3 | 2.00096 | 9907294,9907416,etc |
| zero age horizontal branch | ZAHB | 6 | 3 | 1.000412 | 9907414,9907211,etc |
| space interferometry mission | SIM | 15 | 3 | 1.003026 | 9907203,9907213,etc |
| inverse compton | IC | 46 | 3 | 2.001745 | 9907125,9907126,etc |
| planetary nebula | PN | 26 | 3 | 2.001032 | 9907338,9907183,etc |
| position angle | PA | 23 | 3 | 1.000517 | 9907085,9907216,etc |