In 2006, researchers used the Wilkinson Microwave Anisotropy Probe (launched by NASA in 2001) to measure variations in the cosmic microwave background (a "faint glow which permeates the universe"). According to these measurements, the universe is estimated to be about 13.7 billion years old, "give or take a few hundred-thousand years". | In 2006, researchers used the Wilkinson Microwave Anisotropy Probe (launched by NASA in 2001) to measure variations in the cosmic microwave background (a "faint glow which permeates the universe"). According to these measurements, the universe is estimated to be about 13.7 billion years old, "give or take a few hundred-thousand years". |