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    I am an astronomer, cosmologist, and data scientist. I am currently a NSF funded Assistant Research Scientist at the UC San Diego Center for Astrophysics & Space Sciences (CASS profile) and a Research Affiliate in the MIT Program in Science, Technology and Society (STS). I work on several theoretical and observational cosmology projects to devise and implement fun experiments that leverage cosmology to help test fundamental physics. These include a series of experiments with colleagues to test quantum theory with astronomical observations as well as Infrared and Optical observations of Type Ia Supernovae with ground and space based telescopes, which can be used to measure the expansion history of the universe, cosmic acceleration, and dark energy. Before UCSD, I was an NSF Postdoctoral Fellow at MIT, a NSF Funded Research Associate at MIT, and a Visiting Research Scientist at the MIT Center for Theoretical Physics. I completed my PhD in Astronomy & Astrophysics from the Harvard University Department of Astronomy and I received my BA in Physics & Astrophysics from UC Berkeley. I am very interested in projects at the intersection between observational astronomy, astrophysics, data analysis, and the philosophy of science, especially the philosophy of cosmology. I am excited to explore a range of fascinating scientific questions through research, science writing, art, animation, public outreach, and working with the science media. For more, see my Bio, Resume, and CV.
MIT Astronomy
MIT Vera
Tufts/MIT Cosmo

Cosmic Bell
David Kaiser
Jason Gallicchio
Alan Guth
Brian Keating
Anton Zeilinger
IQOQI, Vienna

Harvard CfA
Harvard Astro
Harvard PIN
Harvard Library
Andy's Cheat Sheets
NSF Essays
Shu Exam
Grad Students/Advisors
Student/Faculty Photos

During the January 2014 MIT Independent Activities Period, the MIT Kavli Institute for Astrophysics and Space Research sponsored a fantastic MIT Art of Astrophysics Competition and exhibit, organized by MIT postdocs Zachary Berta-Thompson and Bryce Croll. Although My Entry and accompanying text (part 1, part 2), Heart of a Star, Revealed, was not among the Prize Winners, all the submissions were fantastic, and I was very happy that Megan Watzke and Kim Arcand of the Chandra X-Ray Center, authors of Your Ticket to the Universe, picked my entry as their unofficial favorite on the Chandra X-Ray Observatory Blog (see the end of their post). The image was also picked up here.
Heart of a Star, Revealed

What Materials / techniques were used:
Public domain Hubble Space Telescope and Chandra X-Ray Observatory images of planetary nebulae and supernova remnants, foreground Milky Way stars from iconic image of Andromeda galaxy, digital editing.

Please briefly describe your work and how it relates to astronomy:
Near the end of their lives, stars can cast off their outer layers slowly, via a gentle stellar wind, resulting in stunning cosmic images of so-called "planetary nebulae", which were originally thought (incorrectly) to be newly forming planetary systems. Stars can also cast off their outer layers (or essentially all of their mass) quickly and violently, in supernova explosions, sometimes leaving behind magnificent "supernova remnants", which are equally as beautiful as planetary nebulae, sometimes eerily similar in form, although arising from very different physical phenomena. Each of these processes comes closer, with varying degrees, to revealing the heart of the star, its inner core where all the magic of nuclear fusion happens, powering the star over the course of its life while transmuting hydrogen and helium into heavier elements like carbon, oxygen, and iron; the rarer and (arguably) more interesting building blocks of the universe. When some of the heavy elements forged inside the heart of the star are ultimately released, in their own time, on a path to merge with the swirling gas and dust clouds of the wider galaxy, they become raw material to form new generations of stars, and eventually - after several generations of chemical enrichment - moons, asteroids, planets, and people (including astrophysicists). All the atoms in our bodies, including those that make up our own hearts, were once just potentialities, trapped for unimaginable aeons inside the heart of a star.

For this piece, I used iconic Hubble Space Telescope and Chandra X-Ray Observatory false color composite images of these amazing wonders of the natural world, often dubbed the jewels of the galaxy. Since these phenomena each signal the gradual or rapid peeling away of matter to reveal the physical hearts of stars - the central place in the cosmos to which all of us owe our existence - they seemed an ideal ingredient to create a patchwork mosaic of the symbol of our own hearts, framed with a backdrop of foreground stars from our own Milky Way galaxy. The submitted image was actually used as the centerpiece for the invitation to our wedding that I designed as an admittedly nerd-inspired tribute to my wife, the love of my life, Kristen Friedman. To be fair - lazy stargazing aside - the life of an astronomer is not alway romantic (especially when debugging code!), but we are extremely lucky to live in an age where we have the tools to see just a small part of how beautiful our world truly is, and to sometimes sit back and wonder how exactly we fit into this ridiculously beautiful universe.

-Andrew Friedman, MIT Postdoc (Jan 31, 2014)
University of California, San Diego UCSD Center for Astrophysics & Space Sciences Massachusetts Institute of Technology MIT Center for Theoretical Physics Institute for Quantum Optics and Quantum Information, Vienna Harvard University Astronomy Harvard-Smithsonian Center for Astrophysics UC Berkeley Astronomy National Science Foundation National Aernautics & Space Administration
Last Updated: Andrew Samuel Friedman, 2/2017

University of California, San Diego, 9500 Gilman Drive
CASS, M/C 0424, SERF Bldg. 334, La Jolla, CA 92093-0424, USA (858) 534-5416

This material is based upon work supported by the National Science Foundation under NSF Award #1056580 (2012-2014) through an NSF Science, Technology, and Society Postdoctoral Fellowship at MIT and the NSF INSPIRE program via NSF Award #1541160 (2015-2018).

Original animations are shared under a
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 US License