'They're on the run! We don't know why that's the case,' said Anna Frebel, a professor of physics at MIT.
Three of the oldest stars in our universe have been discovered, and they were lurking right under our noses this whole time, and traveling in the wrong directionThe heavenly bodies were detected by MIT researchers in the 'halo' of stars that surrounds the distant edge of our Milky Way galaxy, and are thought to have formed between 12 and 13 billion years ago, according to a new paper in the journal Monthly Notices of the Royal Astronomical Society.
Mostly hydrogen and helium were formed in the first few minutes after the Big Bang.The earliest stars in the universe would therefore have been made up of very little else except hydrogen and helium, as heavier elements like strontium and barium simply hadn't been created in high enough quantities—these elements are forged in the hearts of stellar supernovas.Therefore, stars that have low abundances of strontium and barium in their light spectra may be some of the earliest in our universe.
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