TED Fellow and cosmologist Renée Hlozek (South Africa-at-Large & Christ Church 2008) describes what the Planck satellite data can tell us about the universe

"Today—March 21, 2013—the much-anticipated cosmological results from the Planck satellite have been released. In a recent blog post on her own website, TED Fellow and cosmologist Renée Hlozek describes why this is a big day for astrophysics and cosmology. We asked her to explain what the excitement is all about.

“Planck is the ‘next generation’ satellite that measures the tiny fluctuations in the temperature and polarisation of the Cosmic Microwave Background (CMB) – which is light that comes from shortly after the Big Bang, and has been travelling towards us for over 13 billion years,” she says." Read more at TED.