Fifty years ago.......

Discussion in 'Astronomy, Exobiology, & Cosmology' started by paddoboy, Nov 28, 2017.

  1. paddoboy Valued Senior Member

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    Fifty years ago, Jocelyn Bell discovered pulsars and changed our view of the universe
    November 28, 2017 by George Hobbs And Simon Johnston, The Conversation

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    CSIRO Parkes radio telescope has discovered around half of all known pulsars. Credit: Wayne England, Author provided
    A pulsar is a small, spinning star – a giant ball of neutrons, left behind after a normal star has died in a fiery explosion.

    With a diameter of only 30 km, the star spins up to hundreds of times a second, while sending out a beam of radio waves (and sometimes other radiation, such as X-rays). When the beam is pointed in our direction and into our telescopes, we see a pulse.

    2017 marks 50 years since pulsars were discovered. In that time, we have found more than 2,600 pulsars (mostly in the Milky Way), and used them to hunt for low-frequency gravitational waves, to determine the structure of our galaxy and to test the general theory of relativity.




    Read more at: https://phys.org/news/2017-11-fifty-years-jocelyn-bell-pulsars.html#jCp
     
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  3. paddoboy Valued Senior Member

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    Actually when the discovery was first made, one of the possible explanations was Alien Intelligence, or little green men. It was though quickly ruled out.

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  5. Xelasnave.1947 Valued Senior Member

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    Ruled out too soon...what a way to get the public interested in science.

    Thanks for posting and giving me an idea for the fringe section.

    Alex
     
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