Scientists May Have Solved Mystery of Rare Solar System Building Block

'Our finding opens a new possibility to explain the origin of p-nuclei via neutrino absorption reactions on nuclei,' a researcher said.

A strange category of chemicals present in the early days of the solar system has mystified scientists for years—until now.These materials, called p-nuclei or proton-rich nuclei, are a rare group of isotopes of elements heavier than iron that have a low amount of neutrons.Scientists haven't been sure how these isotopes originated, but according to a new paper in the journal Physical Review Letters, it may be as a result of something called the vr-process.

In the paper, the researchers suggest the vr-process, which is when neutron-rich materials are exposed to large amounts of neutrinos in high-energy stellar explosions.Neutrinos are subatomic particles that are extremely light and electrically neutral, which allows them to pass through ordinary matter with very little interaction. Due to their weak interaction with matter, neutrinos are extremely difficult to detect, and large and sensitive detectors are needed to observe them.

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