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Prof. Freedman is a Canadian-American cosmologist at the University of Chicago who works in the area of refining measurement of the Hubble Constant. She is renowned for her work on Cepheid variable stars through a Hubble Space Telescope Key Project. Her work and accomplishments are closely connected to the big-bang theory of Georges Lemaître.

UChicago students conduct research at Magellan Observatory as part of new field course

John Carlstrom, Subramanyan Chandrasekhar Distinguished Service Professor in the Departments of Astronomy & Astrophysics and Physics, the Enrico Fermi Institute, and the College, receives this prize in recognition of his critical contributions to the Physical Sciences Division and the continued success of both academic departments.

Ava Polzin, Astronomy and Astrophysics “The Smallest Pieces of the Puzzle: Using Dwarf Galaxies to Understand the Universe”

Congratulations to Zhuowen (Ben) Zhang for successfully defending his Ph.D. dissertation on "Forward modeling of cluster systematics for cluster cosmology".

Congratulations to Mandy Chen for successfully defending her Ph.D. dissertation on "Toward a Physical Understanding of the Dynamic Circumgalactic Medium"

Congratulations to Jason Poh for successfully defending his Ph.D. dissertation on "Strong Gravitational Lensing Science in the Era of Large Astronomical Surveys".

Congratulations to alumni Will Cerny (BS, 2022; graduate student at Yale) and Sadie Seddon-Stettler (BS, 2022; graduate student at Cornell) for their National Science Foundation Graduate Research Fellowship Awards.

Audrey Scott (BS, 2024) has been awarded a National Science Foundation Graduate Research Fellowship.

Jason Wu (BS, 2025) has been awarded a DAAD summer Research Internship in Science and Engineering (RISE) with the Multiphase Gas Group at the Max Planck Institute for Astrophysics in Germany.

Congratulations to Maya Mallaby-Kay for successfully defending her Ph.D. dissertation on "Probing the Large Scale Structure of our Universe with the Atacama Cosmology Telescope".

Congratulations to Andrea Bryant for successfully defending her Ph.D. dissertation on "HYPOTHETICAL ICY MOON SEISMIC PROFILES FOR COMPARISON TO FUTURE SEISMIC DATA"

Rafael Luque  "Understanding the origin and nature of sub-Neptunes" and Lily Zhao "Enabling Radial Velocity Detection of Earth-Twins Through Data-Driven Algorithms and Community Collaboration"

New data on the cosmic microwave background released from upgrade with 10 times more detectors

My main science research is of an observational nature, concerning Galactic and intergalactic interstellar gas. Highlights for me included my work on the orbiting telescope Copernicus, including the discovery of interstellar deuterium; early observations of absorption associated with five-times ionized oxygen; and discoveries concerning the phases of gas in the local interstellar medium, based on previously unobservable interstellar UV spectral lines.

Angela Olinto, Dean of the Physical Sciences Division, and Professor in A&A, EFI, and Senior Member of the KICP will become the next provost of Columbia University.