9 May 2025
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  • [ 26 March 2025 ] A faint star will reveal itself as it throws a hissy-fit 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

  • T Coronae Borealis
    A faint star will reveal itself as it throws a hissy-fit
    26 March 2025
  • Saturn
    Saturn’s Rings to “Disappear”
    24 March 2025
  • Big Bang
    The Lithium Problem
    17 March 2025
  • Uranus' moon Ariel.
    Discover the many fascinating moons of our Solar System
    17 March 2025
  • Mars Chopper
    A bigger and better helicopter to Mars
    16 March 2025
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