Did light exist at the beginning of the universe?

Did light exist at the beginning of the universe?

Was it dark after the Big Bang, or did light shine immediately?

Radio signal from the very early universe offers clues about the first stars - Science Tech Updates

Understanding how the universe transitioned from darkness to light with the formation of the first stars and galaxies is a key turning point in the universe’s development, known as the Cosmic Dawn. However, even with the most powerful telescopes, we can’t directly observe these earliest stars, so determining their properties is one of the biggest […] The post Radio signal from the very early universe offers clues about the first stars appeared f…