New Faculty 2021

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Alexander (Alex) Ji

Assistant Professor
Department of Astronomy and Astrophysics and the College

Alexander (Alex) Ji’s research emphasis is near-field cosmology. He studies stellar archaeology, the elemental composition of the oldest surviving stars, to learn about the first stars and galaxies, the origin of the elements, the history of the Milky Way, and the nature of dark matter. He is especially interested in the first stars and galaxies, which formed in the first billion years of the universe. He uses relics of the first galaxies to understand the cosmic origin of such heavy elements as gold and platinum.

His research has been published in The Astrophysical Journal, The Astronomical Journal, and Nature.

Ji received a BS in physics and an MS in statistics from Stanford University, followed by a PhD in physics from Massachusetts Institute of Technology, where he was honored with the Martin Deutsch Student Award for Excellence in Experimental Physics. He also held Hubble and Carnegie Fellowships at the Carnegie Observatories, where he received the Thacher Research Award.

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