This is the reality for astronomers today, who are capturing faint signals that have traveled for over 13 billion years to reach Earth. These signals originate from a time when the universe was still ...

You’ve looked up at the night sky. Maybe you’ve wondered how much you don’t know. Turns out, the scale of our ignorance about ...

Scientists used Cosmic Microwave Background data to challenge our understanding of the universe's shape. Here's what they ...

Scientists are reeling from an unexpected blow after news that a much anticipated future observatory—designed to decipher the earliest moments of cosmic history—won’t be able to proceed with its ...

(via Sabine Hossenfelder) In the Big Bang Theory, the cosmic microwave background — microwave-range radiation that floats through the entire universe at a steady 2.7 Kelvin — is evidence that a hot ...

The events surrounding the Big Bang were so cataclysmic that they left an indelible imprint on the fabric of the cosmos. We can detect these scars today by observing the oldest light in the universe.

New research suggests the universe may be lopsided. Cosmic microwave background and galaxy data hint at directional differences, challenging cosmology’s assumption of uniformity and standard ...

The cosmic microwave background, shown at left in this illustration, is a flash of light that occurred when the young universe cooled enough for electrons and protons to form the first atoms. It ...

But there are several important anomalies, including a widely debated one called the Hubble tension. It is named after Edwin ...