Dr. Larry Bradley is an astrophysicist and software engineer at the Space Telescope Science Institute. His research interests are in the field of observational extragalactic astronomy, focusing on the formation and evolution of galaxies in the very early universe. He primarily uses the Hubble and Spitzer Space Telescopes to find and study high-redshift Lyman-break galaxies, including those gravitationally lensed by massive galaxy clusters. He is a member of the Cluster Lensing and Supernova survey with Hubble (CLASH), Brightest of Reionizing Galaxies (BoRG), and Hubble Advanced Camera for Surveys (ACS) Science teams as well as a science advisor to the Hubble Frontier Fields program.

A1689-zD1: Lensed Galaxy at z ~ 7.6

The Cluster Lensing And Supernova survey with Hubble (CLASH) is an innovative survey to place new constraints on the fundamental components of the cosmos using the Hubble Space Telescope.

Frontier Fields

A revolutionary deep field observing program with the Hubble Space Telescope to peer deeper into the Universe than ever before and provide a first glimpse of JWST's universe.


The Brightest of Reionizing Galaxies Survey (BoRG) is a large Hubble Space Telescope Program focused on finding rare and bright galaxy candidates at redshift z~8, when the Universe was about 650 million years old.