Complex sentence: He also has a strong interest in using large-scale galaxy clustering as an indicator of cosmic structure: his main contribution as a senior member of the 2dF Galaxy Redshift Survey team was to trace star formation rates in galaxies and relate it to their environments.
Split into simpler sentences: He also has a strong interest in using large-scale galaxy clustering as an indicator of cosmic structure. His main contribution as a senior member of the 2dF Galaxy Redshift Survey team was to trace star formation rates in galaxies and relate it to their environments.