10 June 2023
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  • [ 7 June 2023 ] Best evidence yet for second supermassive black hole orbiting more massive companion News
  • [ 6 June 2023 ] New software shows promise for coping with photobombing satellites News
  • [ 1 June 2023 ] Webb spots vast plume of water vapor spewing from Saturn’s moon Enceladus News
  • [ 26 May 2023 ] Seeing the universe in X-rays, optical and infrared, all at once News
  • [ 15 May 2023 ] A record-setting explosion as a supermassive black hole gorges on gas News
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Cosmic Ray Isotope Spectrometer

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

  • Best evidence yet for second supermassive black hole orbiting more massive companion
    7 June 2023
  • New software shows promise for coping with photobombing satellites
    6 June 2023
  • Webb spots vast plume of water vapor spewing from Saturn’s moon Enceladus
    1 June 2023
  • Seeing the universe in X-rays, optical and infrared, all at once
    26 May 2023
  • A record-setting explosion as a supermassive black hole gorges on gas
    15 May 2023
  • Home
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      • April last issue
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    • DSLR Calc
  • Reviews
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  • Spaceflight Now
  • Shop
  • Contact Us
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    • Ask Astronomy Now
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