Arno Penzias: Nobel laureate who co-discovered 'echo of Big Bang' dies aged 90 ( physicsworld.com )
The cosmologist Arno Penzias, who discovered the cosmic microwave background (CMB) with Robert Wilson, died on 22 January at the age of 90. He shared a half of the 1978 Nobel Prize for Physics with Wilson, with the other half awarded to Pyotr Kapitsa for his work in low-temperature physics....