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Richard S. Ellis Observational cosmologist

Richard Ellis studies galaxy formation and large scale structure. He uses a variety of observational facilities to trace the distribution of dark matter over a wide range of scales, and to explore the earliest galaxies which are thought to have ionized the universe. Ellis takes a special interest in gravitational lensing, or how matter’s gravitational field can bend light on its path between a source and an observer. He is leading an international effort to build an instrument that will trace the growth of structures directly from patterns in the large-scale distribution of faint galaxies and is currently using the Hubble Space Telescope and large ground-based telescopes to characterize the properties of the most distant galaxies.


Breakthrough Foundation Prize in Fundamental Physics, 2014.

Appointed a Commander of the British Empire, 2008.

Gruber Foundation Cosmology Prize, 2007.

Elected a Fellow of the Royal Society, 1995.

Relevant Publications

B. Robertson et al, "Cosmic Reionization and Early Star-Forming Galaxies: A Joint Analysis of New Constraints from Planck and Hubble Space Telescope," Astrophys. J. Lett. vol. 802, no. 2, pp. 5, Feb. 2015.


R. S. Ellis, "Observations of the High Redshift Universe," in First Light in the Universe, D. Schaerer et al, Eds. Berlin: Springer Berlin Heidelberg, 2008, pp. 259-359.



Advisor Cosmology & Gravity


University College London, European Southern Observatory


PhD (Astrophysics) Oxford University

BSc (Astronomy) University College of London



Ideas Related to Richard S. Ellis

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