Spectrum of LALA J142442.24+353400.2, obtained with the GMOS spectrograph on Gemini North

Searching for the end of the cosmic dark ages with GMOS |  A team of U.S. astronomers reports the discovery of extremely high rates of star formation (more than 11 solar masses per year) in one of the most distant known galaxies in the Universe, some 12.8 billion light-years away. Astronomers traced the galaxy's starburst activity by measuring light emitted in the Lyman-alpha emission line, using deep multi-object spectroscopy conducted at the Gemini Observatory with GMOS-North.