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    and hydrogen cosmic rays tagged posts

    New Research adds a Wrinkle to our Understanding of the Origins of Matter in the Milky Way

    June 24, 2021, Categories  Astronomy/Space

    This image combines data from four space telescopes to reconstruct all that remains of the oldest documented example of a supernova, which was witnessed in 185 A.D. by Chinese astronomers. Supernovae are understood to be important sources of cosmic rays arriving at Earth. Image credit: NASA

    New findings published this week in Physical Review Letters suggest that carbon, oxygen, and hydrogen cosmic rays travel through the galaxy toward Earth in a similar way, but, surprisingly, that iron arrives at Earth differently. Learning more about how cosmic rays move through the galaxy helps address a fundamental, lingering question in astrophysics: How is matter generated and distributed across the universe?

    “So what does this finding mean?” asks John Krizmanic, a senior scientist with UMBC’s...

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