Tag: first stars

After the Big Bang: How the first stars lit up our universe

After the Big Bang: How the first stars lit up our universe

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In 1964, two radio engineers at Bell Labs, Arno Penzias and Robert Wilson, were trying to calibrate a sensitive antenna. They kept picking up an odd hiss of noise, no matter where they pointed the instrument. At first they blamed pigeons nesting in the dish. But when they ruled out all local interference, they realized […]

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Scientists detect 13 billion-year old signal from ‘Cosmic Dawn’ using Earth-based telescopes

Scientists detect 13 billion-year old signal from ‘Cosmic Dawn’ using Earth-based telescopes

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In what can be called a truly unique accomplishment, scientists seem to have detected a 13 billion-year-old signal using Earth-based telescopes. This feat allow them to see how the first stars impacted light emitted from the Big Bang. Astrophysicists measured polarised microwave light to create a clearer picture of what is known as Cosmic Dawn. […]

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