LSST, unlike the South Pole Telescope, will be able to detect anything massive, not just stuff that once held hot gas.

ECONOMIST: Cosmology

The South Pole Telescope could thus see 10 billion years into the past, and might turn up thousands of clusters more than enough to study the evolution of dark energy.

ECONOMIST: Cosmology

Dr Carlstrom and his colleagues propose building an eight-metre-diameter radio telescope at the South Pole to search for such cold spots.

ECONOMIST: Cosmology