Measuring the Oldest Light in the Universe with One of the Highest Telescopes on Earth by Dr. Michael Niemack Oct 12, 7:30 pm $7 for adults, $5 for students/faculty with ID, $3.50 for children/seniors The oldest light in the universe is the cosmic microwave background (CMB), which has been traveling through space for almost 14 billion years. Using one of the highest telescopes on Earth (the Atacama Cosmology Telescope), we can measure the CMB with unprecedented precision to help us understand the origin and evolution of the universe.