Dedicated to the search of the most ancient stars in the Milky Way, the Pristine survey recently identified an extremely rare object. (pixabay)
EPFL astrophysicists actively participated in the discovery of a very rare star, which is particularly old and metal-poor. As a messenger from the distant past, it will allow the scientists to learn more about the young Universe, right after the Big Bang. "We made a major discovery, which questions our understanding of the formation of the first generations of stars in the universe". Researcher at EPFL Laboratory of astrophysics (LASTRO), Pascale Jablonka is a founding member of the Pristine survey, an international project dedicated to the search of the most ancient and metal-poor stars. It allowed the recent identification of an extremely rare object. Called Pristine 221, it is among the 10 most metal-poor stars known to date in the halo of our Galaxy. Moreover, it is one out of two outstanding stars that are almost totally carbon free.
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