What system of two galaxies had its discovery announced on a television program presented by Brian Cox and others?
9Spitch:  The discovery was announced on the BBC television programme "Stargazing Live". Stargazing Live:  The series is primarily presented by scientist Brian Cox and comedian and amateur astronomer Dara Ó Briain with support from TV presenter and biochemist Liz Bonnin and astronomer Mark Thompson.
i don't know