First Low-Latency LIGO+Virgo Search for Binary Inspirals and their Electromagnetic Counterparts

First measurement of Mg isotope abundances at high redshifts and accurate estimate of Delta alpha/alpha

First Observational Tests of Eternal Inflation

First Observational Tests of Eternal Inflation: Analysis Methods and WMAP 7-Year Results

First observations of CN(2-1), HCO$^{+}$(3-2) and C$_{2}$H(3-2) emission lines in the Perseus cluster: constraints on heating mechanisms in the cluster gas

First redshift determination of an optically/UV faint submillimeter galaxy using CO emission lines

First results from 18-22cm VLBA polarisation observations of the MOJAVE-I AGNs

First results from HerMES on the evolution of the submillimetre luminosity function

First Results from the 3D-HST Survey: The Striking Diversity of Massive Galaxies at z>1

First Results from Z-FOURGE: Discovery of a Candidate Cluster at z = 2.2 in COSMOS

First results of the EDELWEISS-II WIMP search using Ge cryogenic detectors with interleaved electrodes

First Results of the Phase II SIMPLE Dark Matter Search

First results on the search for dark matter in the Sun with the ANTARES neutrino telescope

First Science with SHARDS: emission line galaxies

First Season QUIET Observations: Measurements of CMB Polarization Power Spectra at 43 GHz in the Multipole Range 25 <= ell <= 475

First simultaneous optical/near-infrared imaging of an X-ray selected, high-redshift cluster of galaxies with GROND: the galaxy population of XMMU J0338.7+0030 at z=1.1

First spectroscopic measurements of [OIII] emission from Lyman-alpha selected field galaxies at z ~ 3.1

First star formation with dark matter annihilation

First stars in Damped Lyman Alpha systems

First underground results with NEWAGE-0.3a direction-sensitive dark matter detector