| advanced camera for surveys | ACS | 193 | 12 | 2.002368 | 0503465,0503093,etc |
| astrophysical research consortium | ARC | 13 | 11 | 1.000118 | 0503310,0503713,etc |
| max planck institute for astronomy | MPIA | 11 | 11 | 1.000121 | 0503310,0503713,etc |
| space telescope imaging spectrograph | STIS | 89 | 9 | 1.000759 | 0503464,0503320,etc |
| signal to noise | S/N | 34 | 9 | 1.000296 | 0503451,0503009,etc |
| inverse compton | IC | 121 | 8 | 2.00267 | 0503173,0503471,etc |
| advanced ccd imaging spectrometer | ACIS | 77 | 7 | 2.000926 | 0503256,0503195,etc |
| intra cluster medium | ICM | 25 | 7 | 1.000692 | 0503426,0503536,etc |
| kolmogorov smirnov | K-S | 37 | 6 | 1.001597 | 0503477,0503094,etc |
| colour magnitude diagram | CMD | 88 | 6 | 1.001461 | 0503594,0503179,etc |
| ultra deep field | UDF | 150 | 5 | 2.006113 | 0503093,0503275,etc |
| european photon imaging camera | EPIC | 36 | 5 | 1.000906 | 0503029,0503009,etc |
| wide field camera | WFC | 25 | 5 | 2.000584 | 0503138,0503409,etc |
| optical monitor | OM | 44 | 5 | 2.000574 | 0503470,0503678,etc |
| markov chain monte carlo | MCMC | 21 | 5 | 1.002271 | 0503036,0503444,etc |
| medium energy grating | MEG | 38 | 5 | 2.000586 | 0503224,0503570,etc |
| high energy grating | HEG | 83 | 5 | 2.001619 | 0503224,0503570,etc |
| period luminosity | PL | 131 | 5 | 1.002859 | 0503598,0503637,etc |
| post asymptotic giant branch | PAGB | 25 | 5 | 2.000302 | 0503086,0503198,etc |
| high energy transmission grating | HETG | 52 | 5 | 2.001186 | 0503636,0503530,etc |
| two dimensional | 2D | 63 | 4 | 2.000767 | 0503474,0503149,etc |
| canadian galactic plane survey | CGPS | 130 | 4 | 2.003137 | 0503119,0503443,etc |
| friends of friends | FOF | 8 | 4 | 1.00021 | 0503172,0503282,etc |
| science analysis software | SAS | 7 | 4 | 1.000258 | 0503455,0503471,etc |
| wide field and planetary camera 2 | WFPC2 | 31 | 4 | 1.000409 | 0503320,0503429,etc |
| wolf rayet | WR | 88 | 4 | 1.009023 | 0503471,0503341,etc |
| science analysis system | SAS | 8 | 4 | 1.000127 | 0503477,0503261,etc |
| proportional counter array | PCA | 27 | 4 | 2.00085 | 0503081,0503292,etc |
| integrated sachs wolfe | ISW | 30 | 4 | 1.004225 | 0503347,0503349,etc |
| power law | PL | 25 | 4 | 2.00098 | 0503665,0503331,etc |
| the red giant branch | TRGB | 22 | 4 | 1.000945 | 0503125,0503418,etc |
| super massive black hole | SMBH | 36 | 4 | 1.001006 | 0503354,0503156,etc |
| soft gamma ray repeater | SGR | 75 | 4 | 2.004758 | 0503335,0503390,etc |
| nasa extragalactic database | NED | 10 | 3 | 2.000313 | 0503523,0503693,etc |
| ultra luminous x ray source | ULX | 49 | 3 | 1.006012 | 0503465,0503623,etc |
| wide field planetary camera 2 | WFPC2 | 4 | 3 | 1.000335 | 0503465,0503597,etc |
| mexican hat wavelet | MHW | 38 | 3 | 2.001266 | 0503149,0503148,etc |
| scale adaptive filter | SAF | 101 | 3 | 2.003316 | 0503149,0503139,etc |
| ministerio de ciencia y tecnolog'i a | MCYT | 9 | 3 | 1.000136 | 0503149,0503139,etc |
| near infrared camera and multi object spectrometer | NICMOS | 20 | 3 | 1.002595 | 0503093,0503310,etc |
| photodissociation region | PDR | 94 | 3 | 1.004188 | 0503063,0503711,etc |
| legacy archive for microwave background data analysis | LAMBDA | 7 | 3 | 1.000201 | 0503388,0503402,etc |
| charge transfer inefficiency | CTI | 12 | 3 | 2.000084 | 0503029,0503091,etc |
| point source catalog | PSC | 5 | 3 | 1.000218 | 0503029,0503155,etc |
| particle physics and astronomy research council | PPARC | 4 | 3 | 1.000081 | 0503455,0503655,etc |
| proportional counter unit | PCU | 11 | 3 | 1.000121 | 0503658,0503470,etc |
| synchrotron self compton | SSC | 4 | 3 | 1.000078 | 0503085,0503115,etc |
| radial velocities | RV | 87 | 3 | 2.003229 | 0503653,0503654,etc |
| planetary camera | PC | 54 | 3 | 2.001777 | 0503320,0503620,etc |
| friedmann robertson walker | FRW | 12 | 3 | 1.000539 | 0503582,0503478,etc |
| monte carlo | MC | 45 | 3 | 1.001207 | 0503672,0503129,etc |
| local thermodynamical equilibrium | LTE | 11 | 3 | 1.00068 | 0503660,0503021,etc |
| x ray luminosity function | XLF | 119 | 3 | 2.002544 | 0503477,0503150,etc |
| hardness ratio | HR | 24 | 3 | 2.001094 | 0503477,0503247,etc |
| first ionization potential | FIP | 50 | 3 | 1.001713 | 0503038,0503546,etc |
| temperature polarization | TE | 18 | 3 | 1.001073 | 0503486,0503128,etc |
| smooth particle hydrodynamics | SPH | 24 | 3 | 2.000453 | 0503631,0503656,etc |
| star formation history | SFH | 8 | 3 | 1.000159 | 0503676,0503418,etc |
| cosmic infrared background | CIRB | 63 | 3 | 2.003843 | 0503389,0503503,etc |
| atacama large millimeter array | ALMA | 5 | 3 | 1.000165 | 0503389,0503445,etc |
| infrared array camera | IRAC | 107 | 3 | 2.002027 | 0503084,0503670,etc |
| first look survey | FLS | 8 | 3 | 1.001567 | 0503084,0503638,etc |
| turn off | TO | 45 | 3 | 2.00201 | 0503594,0503140,etc |
| tully fisher | TF | 20 | 3 | 1.000841 | 0503536,0503597,etc |
| high resolution imager | HRI | 13 | 3 | 2.000256 | 0503372,0503131,etc |
| globular cluster system | GCS | 32 | 3 | 2.000854 | 0503158,0503616,etc |
| chandra x ray center | CXC | 7 | 3 | 1.000359 | 0503430,0503319,etc |
| multiband imaging photometer for spitzer | MIPS | 67 | 3 | 1.002007 | 0503554,0503670,etc |
| hertzsprung russell | H-R | 7 | 3 | 1.000371 | 0503324,0503254,etc |
| low energy transmission grating | LETG | 69 | 3 | 2.00017 | 0503091,0503183,etc |