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Measuring light, known as the cosmic microwave background (CMB), that traveled ... about 380,000 years old—the equivalent of hours-old baby pictures of a now middle-aged cosmos.

(CNN) — Elon Musk will pay a visit to the Pentagon on Friday after the tech billionaire received an invitation from Secretary Pete Hegseth, the Defense Department said late Thursday evening.

The data on the cosmic microwave background collected with the Atacama Cosmology Telescope (ACT) shows the state of the cosmos approximately 380,000 years after the Big Bang. Assuming that the ...