Brosch was the Principal Investigator of the TAUVEX space telescope array from 1989 to 2011. TAUVEX was intended to study the ultraviolet sky in spectral bands not observable from the ground by using three co-aligned telescopes, each imaging the same one-degree wide sky region. Because of these innovative aspects, TAUVEX was selected in 1988 by the Israel Space Agency (ISA) as its first priority experiment to be launched in space, but its promised satellite and launcher never materialized. The TAUVEX project was cancelled by ISA after attempts to launch it as an associated payload on the Spektr-RG platform (led by the Soviet Union) between 1991 and 2000, then later from 2000 to 2010 on the Indian GSAT-4 spacecraft, failed for various reasons. ISA also refused to let the fight model of TAUVEX be used for balloon flights that could have yielded valuable information in a spectral band around 200 nm.