Harvard logo

Harvard University,

ITC logo
Institute for Theory and Computation
 Professor Avi Loeb        
(617) 496-6808 (office)
(617) 913-5598 (cellular)
(617) 495-7093 (office)
Center for Astrophysics
60 Garden Street, MS-51
Cambridge, MA, 02138
click to access collection


red color bar
Avi Loeb is the Frank B. Baird, Jr. Professor of Science at Harvard University. He serves as Chair of the Department of Astronomy and director of the Institute for Theory and Computation (ITC), within the Center for Astrophysics. He is an elected member of the American Academy of Arts & Sciences and a member of the Board on Physics and Astronomy of the National Academies .  


Staff Assistant:
Ms. Uma Mirani
Tel: (617)496-5870 

Astron. Dept. Admin.:
Mr. Robb Scholten
Ms. Peg Herlihy

Tel: (617)495-3752 

ITC Administrator: 
Mr. Mark Palmer 
Tel: (617)495-1971 

Theory Div. Admin.: 
Ms. Nina Zonnevylle 
Tel: (617)495-7962 


red color bar


*Gigantic black hole discovered from the dawn of time (2/15)

*Detecting gravitational waves with atomic clocks (2/15)

*"Essay on "How to collect matches that will catch fire"; News report in Italian (2/15)

*BBC filming for Horizon program on the first stars (1/15)

*Black hole binary, NY Times (1/15)

*Two of Loeb's students, Henry Lin and Tony Pan, are featured in Forbes magazine list of "30 under 30 in Science" (1/15)

*Relativistic stars, TIME magazine (12/14)

*"Much-Discussed Views that Go Way Back", New York Times (12/14)

*"Black Hole Fails to Destroy Mystery Cosmic Cloud", National Geographic (11/14); Space.com (11/14)

*Trip through wormholes, Smithsonian Magzine (11/14)

*TV interview by Douglas Kennedy (10/14)

*Q&A interview on pages 22 and 23 of the 2014 Harvard's FAS Dean's Report (10/14)

*"The Lost Donkeys of Science", Project Syndicate (10/14)

*Public Lecture on "New Search Methods for Primitive and Intelligent Life Far from Earth" ; Harvard Crimson report ; Harvard Gazette report ; Astronomy magazine report (10/14)

*"Pollution on Other Worlds May Show Advanced Alien Life", ApJL ; TIME Magazine article (7/14) ; NPR interview (8/14)

*"Interplanetary World Cup", Sports Illustrated (6/14)

*"Galactic Collision Gave Andromeda Its Arms", Nature (6/14)

*"On the Benefits of Promoting Diversity of Ideas", Nature Physics (9/14) ; INAF article (in Italian)

*Collision between the Milky Way and Andromeda, National Geographic (3/14)

*Cosmic Dawn, Scientific American (4/14)

*Theory of everything, Space.com (3/14)

*Interviews on cosmology, "Closer to Truth" (3/14)

*Hunt for Rogue black holes, Space.com (3/14)

*TV interview about the Big Bang (in hebrew), Channel 2, Israel (3/14)

*Big Bang Theory, Smithsonian Magazine (3/14) , in New Scientist , in Harvard Gazette, and public lecture (2/14)

*Review of book on First Galaxies, Physics Today (2/14)

*The latest snack of SgrA*, NY Times (2/14) ; and PBS Newshour (3/14)

*Creativity in science, NPR (2/14)

*"Closing the Window on Primordial Black Holes as Dark Matter" ; see report in Nature (1/14) , or in New Scientist (2/14)

*"Insights on Supermassive Black Holes", Nature (1/14)

*"Fast Radio Bursts Might Come from Nearby Stars" ; see press release (12/13)

*"The Habitable Epoch of the Early Universe" ; see report in Nature (12/13) , radio interview (3/14) , in Space.com (1/14) , in Slate magazine (2/14) and in Ciel \& Espace (French, 2/14)

*"Chasing Avi Through Outer Space Media", by Charlie Petit (12/13)

*"The 25 Most Influential People in Space", by TIME Magazine. (12/12)

*"Could Primordial Black Holes be the Dark Matter?", TIME magazine (9/13)

*"On the Importance of Conceptual Thinking Outside the Simulation Box", Nature Physics (7/13)

*The latest on the Sandage-Loeb Test (4/14)

*TIME Magazine's report on Einstein's planet (6/13) -- confirming Loeb & Gaudi's (2003) new method for detecting planets

*Giant Magellan Telescope, Harvard magazine (5/13)

*Parallel Universes (in Hebrew), Yediot America (4/13)

*Q&A: Tweaking the Universe, Harvard Gazette (3/13)

*Harvard Astronomy Reunion; Gazette article (4/5/2013)

*Tidal disruption of the gas cloud G2 by the black hole SgrA* (3/13)

*Q&A: Scientist of the Week (3/13)

*TIME Magazine article; Habitable Planets Around White Dwarfs (Harvard Gazette); Smithsonian coverage ; ArXiv paper (2/13)

*A Learner's Guide to the Universe (2/13)

*Q&A on the Harvard Astronomy Department (2/13)

*Interdisciplinary discussion (2/13)

*Video of book launch event (2/13)

*Trip to Las Campanas Observatories, Chile (1/13)

*Chambliss Award (1/13)

*HST discovers seven primitive galaxies (12/12)

*Microlensing of the SMC stars by the LMC (10/12)

*21cm Cosmology, cover story in New Scientist (10/12)

*"Top Ten Thinkers", Popular Mechanics magazine (in russian) (10/12)

*"Disruption of a Proto-Planetary Disk by the Black Hole at the Center of the Milky Way" ; arXiv paper (9/12)

*"How to Nurture Scientific Discoveries Despite Their Unpredictable Nature", arXiv paper ; PBS version (7/12)

*"Astronomers Seek Biggest Stars" (6/12) ; ArXiv paper (3/12)

*"The Optimal Cosmic Epoch for Precision Cosmology" (5/12) ; ArXiv paper (3/12)

*"Runaway Black Hole in CID-42" (6/12) ; ArXiv version (5/12)

*Galileo Chair awarded to Prof. Loeb by Scuola Normale Superiore, Pisa, Italy ; flyer announcing lecture series (6/12)

*"Rating Risk from Theory Bubbles", Nature magazine (4/12) ; extended ArXiv version (8/11)

*Hypervelocity planets: press release, MSNBC, TIME magazine, and original paper (3/12)

*Q&A essay about "Searching for the First Stars" by the Kavli Foundation (2/12)

*Precessing Jet from Tidal Disruption of a Star Physical Review Letters article; and synopsis by the American Physical Society (2/12)

*Artificial Lights Could Reveal Alien Civilizations scientific paper; news reports in the Boston Globe, Harvard Gazette, and TIME magazine (11/11)

*The Dark Ages of the Universe (10/11)

*Plan to measure the cosmic acceleration in real time (based on Loeb 1998)

*Review of Loeb's book in the American Journal of Physics (5/11)

*Review of Loeb's book in Science Magazine (11/10)

*Cosmology in a trilion years: New Scientist article; and summary; and related correspondence with Freeman Dyson; and the actual paper (1/11)

*"Getting Paid to Think About the Sky", Israel21C Profile article (12/10)

*"Found: A Quasar From the Dawn of Time", TIME Magazine (6/11)

*"Hydrogen Was Not Ionized Abruptly", Nature Magazine (12/10)

*"Supernova Shines Light on Black Hole Formation" on NPR ; the NASA press conference (11/10); and a related interview on Israeli TV and Israeli radio (12/10)

*Q&A Interview by the Air & Space Magazine (9/10)

*"Black Hole Silhouettes", cover story of Science News (9/10).

*Write-up of banquet lecture on "Taking The Road Not Taken" (8/10). A shortened version of it appeared in Nature magazine (9/10) and a related lecture at Santa Barbara (5/11)

*Scientific American article on "Portrait of a Black Hole" (12/9) , French translation (3/12)

*Astronomy magazine Q&A article (1/10)

*Physics Today article on "Gamma-Ray Burst Has Highest Redshift yet Seen" (8/09)

*"Imaging Black Holes" (9/08)

*Science magazine "perspective" on instrument development to measure the Sandage-Loeb Effect (8/08)

*ASTRONOMY magazine cover story on "The State of the Universe" (8/08)

*Smithsonian magazine cover story on "Illuminating Black Holes" (4/08)

*ASTRONOMY magazine cover story on "Milkomeda" (6/08)

*The Future of our Universe, Physica Plus (1/08)

*Top 10 Space Stories of 2007" (1/08)

*"Extraterrestrial Life"- YouTube video of Panel Discussion, Philoctetes Center, NYC (4/07)|

*Scientific American article on "The Dark Ages of the Universe" (11/06)

*TIME Magazine cover story, entitled: "Let There Be Light" (9/06)

*"Eavesdropping on the Universe" (QuickTime movie; 1/07)| |(article; 5/07)

*Personal note about John N. Bahcall (12/06)


red color bar
black line




red color bar

Career Path Autobiographical sketch of Loeb's career path (February 2015).
Science Profile Overview of Loeb's career path in Science Magazine (April 2013).
Discover Profile Overview of Loeb's contributions to studies of the first galaxies in Discover Magazine (April 2014).
TIME Profile Articles about Loeb's research in TIME Magazine.
New York Times Profile A conversation with Claudia Dreifus (December 2014).
Harvard Q&A Interview featured in FAS Dean's Report (October 2014).
Opinion Essays Essays by Loeb on the promotion of innovation in scientific research.
Curriculum Vitae Current biographical information as well as a listing of all publications.
Biographical sketch Brief account of Loeb's biography and research highlights.
Research Highlights Various topics of research in theoretical Astrophysics.
Astro-ph Publication Search Search of the astro-ph archives for Prof. Loeb's scientific publications.
ADS Publication Search Search of the ADS abstract database for Prof. Loeb's scientific publications.
Books "The First Galaxies in the Universe", A. Loeb & S. Furlanetto (Princeton University Press, 2012).

"How Did The First Stars and Galaxies Form?", A. Loeb (Princeton University Press, 2010).

"First Light in the Universe", A. Loeb, A. Ferrara, & R. S. Ellis (Springer-Verlag, 2008).
Graduate Students List of current and former graduate students.

Video segments of Loeb's students (2014).
Webcasted Lectures and Interviews "New Search Methods for Primitive and Intelligent Life Far From Earth", Public lecture at Harvard's Science Center (September 23, 2014).

"Interview on The Search for Extraterrestrial Life", Serious-Science, Moscow, Russia (June 17, 2014).

"Interview on The First Stars and Galaxies", Serious-Science, Moscow, Russia (June 17, 2014).

"Advances in Probing the Spacetime Near Astrophysical Black Holes", Sommerfeld Theory Colloquium, LMU, Munich, Germany (June 18, 2014).

"Are Fast Radio Bursts Galactic or Cosmological?", Phillips auditorium (May 7, 2014).

"Interview on The Habitability of the Early Universe", Stuart Davis Media (March 28, 2014).

"The Scientific Story of Genesis", Harvard College Observatory Night (Feb. 20, 2014).

*Interviews on cosmology, "Closer to Truth" (March 2014)

"A Closer Look at Black Holes", STScI colloquium (Nov. 6, 2013).

"Public Lecture on Cosmology", University of Waterloo (Sep. 16, 2013).

"The First Galaxies in the Universe", book launch event (Feb. 1, 2013).

"Basic Principles of Structure Formation", Jerusalem Winter School in Theoretical Physics (Dec. 31, 2012).

"The First Galaxies", Jerusalem Winter School in Theoretical Physics (Jan. 1, 2013).

"Formation and Mergers of Massive Black Holes", Jerusalem Winter School in Theoretical Physics (Jan. 2, 2013).

"Lecture I: Structure Formation in the Universe", Galileo Chair (Cattedra Galileiana), Pisa, Italy (June 26, 2012).

"Lecture II: The First Galaxies and Reionization", Galileo Chair (Cattedra Galileiana), Pisa, Italy (June 27, 2012).

"Lecture III: A Closer Look at Black Holes", Galileo Chair (Cattedra Galileiana), Pisa, Italy (July 3, 2012).

"Lecture IV: Future Frontiers in Cosmology from a Galilean Perspective", Galileo Chair (Cattedra Galileiana), Pisa, Italy (July 4, 2012).

"How Did the First Stars and Galaxies Form?", Las Cumbres Prize lecture (May 2011).

Introductory video on book by Princeton University Press (August 2010);

"Future Frontiers in Astrophysics: Suggestions for Young Researchers" (Sep. 2010).

"Interview: What is the Far Future of the Universe?" (July 2007).

"Interview: What is the Large Scale Structure of the Universe?" (July 2007).

"Interview: How Did Objects Form in the Universe?" (July 2007).

Public lecture on "The Past and Future of the Universe", at the Perimeter Institute (June 26, 2009).

"The First Stars and Galaxies", public lecture in hebrew, Jerusalem (2010).
Harvard conferences organized by Loeb May, 2000: "The First Generation of Cosmic Structures"

May, 2002: "Gamma-Ray Bursts: The Brightest Explosions in the Universe"

May, 2004: "Astrophysics of Planetary Systems"

May, 2006: "The History of Nuclear Black Holes in Galaxies"

May, 2008: "21cm Cosmology"

May, 2010: "Dynamics from the Galactic Center to the Milky Way Halo"

May, 2011: "Hydrogen Cosmology"

May 14-17, 2012: "Testing General Relativity with Astrophysical Systems"

May 19-22, 2014: "Debates on the Nature of Dark Matter"
Press Releases Links to old press releases and science news articles.
Scientific Images Simulation of the collision between the Milky-Way and Andromeda, and a brief summary of the future of the Universe and the appearance of the black hole at the center of our galaxy
Photos A collection of personal photos.



*"21-cm Cosmology", invited review for Reports on Progress in Physics (9/11)

*"Let There be Light", invited review for UNESCO EOLSS encyclopedia (4/08)

*"The Physics and Early History of the Intergalactic Medium", Reports on Progress in Physics (11/06)

*"First Light" (book), SAAS-Fee Winter School (4/06)

*"The Reionization of the Universe by the First Stars and Quasars", Annual Reviews of Astronomy & Astrophysics (10/00)

*"In the Beginning: The First Sources of Light and the Reionization of the Universe", Physics Reports (10/00)

Comments or Questions? Contact umirani@cfa.harvard.edu