New observations with the Atacama Cosmology Telescope in Chile reveal the earliest-ever "baby pictures" of our universe, showing some of the oldest light we can possibly see.

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In this image, three wavelengths of light have been combined to highlight the Milky Way (purple) and cosmic microwave background (gray). ACT COLLABORATION; ESA/PLANCK COLLABORATION It’s hard to ...

The images released Tuesday show the oldest light in the universe, with the most precise measurements to date of the universe’s early properties, including its density, expansion and age.

Cosmologists hoped that new data from the Atacama Cosmology Telescope in Chile, which examines the oldest light in the universe, would clear things up and possibly reveal physics that diverges ...

What you’re almost hearing is a 13.8-billion-year-old signal from the Big Bang. That signal—the oldest light of the cosmos stretched by the expansion of space into invisible, pervasive ...

Later observations supported his conception. The imprint of this type of radiation on the oldest light in the universe—the cosmic microwave background (CMB)—is one prediction of inflation ...