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Artist illustration of the first solar disk, with a picture embedded in a blue crystal of hibonite, one first minerals to form in the solar system. The Field Museum, University of Chicago, NASA, ESA, and E. Feild (STScl)
The ancient and rare blue crystals of the dawn of the solar system help to confirm that the newborn sun was violently active, reports a new study. 19659005] Astronomers have previously found that stars are typically incredibly energetic very early in their evolution. Scientists had suspected that the same was true of the sun after its birth about 4.6 billion years ago.
"The sun was very active in his first life – he had more eruptions and gave off a more intense stream of charged particles" Philipp Heck, a co-author of the study, a curator at Field Chicago Museum, said in a statement. "I think about my son – he's three, he's also very active." [Solar Quiz: How Well Do You Know the Sun?]
However, proving this "early active sun hypothesis" is difficult because it is difficult to find material that recorded what the primitive sun was and that also survived billions of dollars. 39 years unscathed.
Researchers analyzed samples of the Murchison meteorite, which crashed in 1969 near the town of Murchison, Murchison Province. Australian state of Victoria. This meteorite, preserved at the Chicago Field Museum, dates from the beginning of the solar system and is recognized in the scientific community for its abundance of organic molecules
as the giant disk of gas and dust that surrounded the early sun cooled. About 4.5 billion years ago, the first minerals began to form: microscopic ice-blue crystals called hibonites, the largest of which measured only a few times the diameter of a hair human
. Study professor Levke Kööp, a cosmochemist from the University of Chicago, told Space.com.
If the primitive sun spit out a lot of energetic particles, some of them would have had to hit calcium and aluminum in the crystals, dividing these atoms into smaller neon and helium atoms . This evidence of an early active sun could have remained unscathed unscathed in the crystals for billions of years and be incorporated into the rocks that eventually fell to Earth for scientists to study.