Anna Frebel (born 1980 in Berlin) is a German astronomer working on discovering the oldest stars in the universe.
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Anna Frebel grew up Göttingen, Germany. After finishing high school, she began studying physics in Freiburg im Breisgau but did not finish the physics program and did not obtain a physics degree there. Instead she enrolled in an astronomy program in Australia, where she obtained a PhD in Astronomy from the Australian National University's Mount Stromlo Observatory in Canberra. A W. J. McDonald Postdoctoral Fellowship brought her to the University of Texas at Austin in 2006, where she continued her studies.
From 2009 to 2011, she was a Clay Postdoctoral Fellow at the Center for Astrophysics | Harvard & Smithsonian in Cambridge (Massachusetts). Since 2012 she is an assistant professor of physics at the Massachusetts Institute of Technology.
In 2005, Frebel discovered the star HE 1327-2326, which is the most iron-deficient star, stemming from a time very shortly after the Big Bang. In 2007 she also discovered the red giant star HE 1523-0901, which is about 13.2 billion years old.
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