29 March 2023
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Latest News
  • [ 28 March 2023 ] James Webb’s infrared vision lets astronomers take an exoplanet’s temperature News
  • [ 27 March 2023 ] NASA gearing up for OSIRIS-REx asteroid sample recovery News
  • [ 23 March 2023 ] A simpler, more mundane explanation for ‘Oumuamua’s strange behaviour News
  • [ 22 March 2023 ] Japanese Hakuto-R moon lander slips into lunar orbit News
  • [ 21 March 2023 ] Analysis of Magellan data shows apparent volcanic activity on Venus News
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Robert Binns

News

Radioactive ‘timers’ reveal likely source of galactic cosmic rays

22 April 2016 Astronomy Now

Most of the cosmic rays arriving at Earth from our galaxy come from nearby clusters of massive stars, according to new observations from NASA’s Advanced Composition Explorer (ACE) spacecraft. But the detection of a few radioactive cosmic-ray iron nuclei also indicates that there has been a supernova in our galactic neighbourhood within the last few million years.

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News Headlines

  • James Webb’s infrared vision lets astronomers take an exoplanet’s temperature
    28 March 2023
  • NASA gearing up for OSIRIS-REx asteroid sample recovery
    27 March 2023
  • A simpler, more mundane explanation for ‘Oumuamua’s strange behaviour
    23 March 2023
  • Japanese Hakuto-R moon lander slips into lunar orbit
    22 March 2023
  • Analysis of Magellan data shows apparent volcanic activity on Venus
    21 March 2023
  • Home
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    • Current Issue
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    • Renew Subscription
      • March last issue
      • April last issue
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  • AstroFest 2023
  • News
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    • UK Sky Chart
    • Almanac
    • Scope Calc
    • DSLR Calc
  • Reviews
    • Equipment
    • Book Reviews
  • Spaceflight Now
  • Shop
  • Contact Us
    • Subscriptions
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    • Ask Astronomy Now
    • Editorial
    • Advertising

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