Thursday, September 24, 2026
Science

Is the universe twisted? A new check on a possible twist in the universe's oldest light

The cosmic microwave background (CMB) is the universe's oldest light, leftover thermal radiation from about 380,000 years after the big bang. Maps of the CMB offer a picture of the "baby universe" as it was 13.8 billion years ago.

Is the universe twisted? A new check on a possible twist in the universe's oldest light
Image: Phys.org
The cosmic microwave background (CMB) is the universe's oldest light, leftover thermal radiation from about 380,000 years after the big bang. Maps of the CMB offer a picture of the "baby universe" as it was 13.8 billion years ago.

Originally published at Phys.org

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