Ancient Starlight

Image credit: NASA

According to the New York Times, “Ancient starlight, emitted by the first stars in the universe, has been detected using the Fermi Gamma-ray Space Telescope. Marco Ajello, an astrophysicist at the University of California, Berkeley, and his colleagues report the finding in the current issue of the journal Science. Dr. Ajello conducted the research while working at Stanford University.

“‘These were probably the very first objects to form in our universe,’ he said. ‘They formed just about 500 million [10+08] years after the Big Bang.’

“Scientists suggest that the Big Bang occurred about 13 billion [10+10] years ago, resulting in the creation of our universe, which continues to expand. The first stars in the universe were massive and primarily made up of hydrogen [hydrogen atoms are 10-10 meters in diameter]. They probably burned through the hydrogen quickly and exploded into supernovas early on. Although those original stars are long gone, the light from them is still traveling to us, Dr. Ajello said.”

To read the full article, click here.

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