Detected a light from the earliest stars

Ancient starlight, emitted by the first stars in the universe, has been detected using the Fermi Gamma-ray Space Telescope. The astrophysicist Marco Ajello and his colleagues report the finding.

“These were probably the very first objects to form in our universe,” he said. “They formed just about 500 million years after the Big Bang.” “Scientists suggest that the Big Bang occurred about 13 billion 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. 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.”

Measuring the ancient starlight directly was impossible because the light from our own galaxy is overpowering. So instead, the researchers used gamma rays.

The researchers collected data on light in the universe 4 billion years, 8 billion years and 11 billion years after the Big Bang. In the future, he hopes to take measurements at points even closer to the beginning of the universe.

Opinion: I think this article is interesting because, maybe, it will mean a new form to think about the past of the universe.

General Dynamics C4 Systems - Artist Concept of Fermi

I took the information of this article from http://www.nytimes.com/2012/11/06/science/scientists-detect-starlight-from-early-universe.html?ref=science

The original source here: http://arxiv.org/pdf/1211.1671v1.pdf

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4 Responses to Detected a light from the earliest stars

  1. Mónica di:

    I think this article is very interesting and this finding could be important to some phisic and astrologic studies for discover how the universe was created and things like that.

    The sumary of the article it´s good, but you didn’t add the original source
    http://www.sciencemag.org/content/338/6111/1190.abstract or your personal opinion.

    • Mónica, you should’t confuse astrologic (related to astrology, a pseudoscience) with astronomical (related to astronomy). Remember “physics studies’ or ‘studies in physics’

  2. An incomplete work, because:
    1) This piece of news is not really rewritten, writing a post is more than ‘copy and paste’. It deserves low marks (2 out of 4)
    2) You haven’t search for the original source. I say search and not find because there were a direct link in the New York Times article!! (Marco Ajello, an astrophysicist at the University of California, Berkeley, and his colleagues report the finding in the current issue of the journal Science).
    Remember that working with the original paper could result in four out of ten marks.
    >> Typing the title in google you will find a pdf file in arXiv.org (Open access to e-prints in Physics, Mathematics, Computer Science, Quantitative Biology). Well, the original paper is too technique for us. I suggest you’d explain a term included in the title: blazars
    3) I cannot find your personal opinion (two out of ten additional marks)

    >> Posts cannot be ‘Uncategorized’, you must choose one!
    >> Let me know the changes you make sending a comment

  3. > Have you anything done with the original source?
    > A thematic category!!

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