The sun rises behind the cosmic microwave background (CMB) radiation telescopes at the National Science Foundation'€™s South Pole Station. Steffen Richter/Harvard University hide caption

itoggle caption Steffen Richter/Harvard University

Cosmic microwave background radiation (CMB) as observed by Planck. The CMB is a snapshot of the oldest light in our Universe, imprinted on the sky when the Universe was just 380,000 years old. Planck Collaboration/ESA hide caption

itoggle caption Planck Collaboration/ESA

Science has been working to shed light on the nature of the Universe for 400 years. Alberto Pomares/iStockphoto.com hide caption

itoggle caption Alberto Pomares/iStockphoto.com