| Participant | Organization |
| Andreas Albrecht | UC Davis |
| Steven Allen | KIPAC/SLAC; Stanford |
| Mr. Randy Avera | Randolph Publishing Company |
| Jonathan Bagger | Johns Hopkins University |
| Rachel Bean | Cornell University |
| Dr. Chris Bebek | LBNL |
| Dr. Dominic Benford | NASA / GSFC |
| Gabriel R. Bengochea | IAFE-UBA-CONICET |
| Dr. Chuck Bennett | Johns Hopkins |
| Prof. Gary Bernstein | University of Pennsylvania |
| Dr. Chris Blake | Swinburne University of Technology |
| Michael Blomqvist | Stockholm University |
| Prof. Sidney Bludman | Depto. de Astronomia, Universidad de Chile |
| Dr. James Braatz | NRAO |
| Dr. Sarah Bridle | University College London |
| Andre Bruyas | Cittec-Mexico, S.A. |
| Prof. Robert Caldwell | Dartmouth College |
| Dr. Kenneth Carpenter | NASA's GSFC |
| Dr. Suzi Casement | Northrop Grumman |
| Dr. Tracy Clarke | NRL/Interferometrics Inc. |
| Prof. Asantha Cooray | UC Irvine |
| Mr. Ron Cowen | Science News |
| Dr. Tomas Dahlen | STScI |
| Prof. Ruth Daly | Penn State University |
| Dr. William Danchi | NASA Goddard Space Flight Center |
| Dr. Susana Deustua | STSCI |
| Dr. Van Dixon | JHU |
| Mr. Duane Doles | Howard University (NSF Bridge to Doctorate, GEM Fellow) |
| Dr. Anton Dorodnitsyn | NASA GSFC |
| Dr. Samantha Edgington | Lockheed Martin Space Systems |
| Dr. Daniel Eisenstein | Steward Observatory |
| Dr. Mike Fall | STScI/IAS |
| Ms. Wenjuan Fang | Physics Department, Columbia University |
| Fabio Favata | ESA |
| Dr. Henry Ferguson | STScI |
| Prof. Alex Filippenko | UC Berkeley |
| Ms. Ann Finkbeiner | freelance/JHU |
| Ms. Brenna Flaugher | Fermilab |
| Mr. Ryan Foley | UC Berkeley |
| Ms. Maggie Fox | Reuters |
| Urbano Franca | IFIC - CSIC/Universidad de Valencia |
| Dr. Wendy Freedman | Carnegie Observatories |
| Dr. Andrew Fruchter | STScI |
| Ms. Cheryl GUNDY | STScI |
| Prof. Peter Garnavich | University of Notre Dame |
| Dr. Mandeep Gill | Ohio State Univ |
| Dr. Ben Gold | Johns Hopkins University |
| James Graber | LoC |
| Dr. Matthew Greenhouse | GSFC |
| Mr. Kevin Hartnett | NASA GSFC |
| Dr. Mike Hauser | STScI |
| Dr. Henk Hoekstra | University of Victoria |
| Dr. Benne Holwerda | Space Telescope Science Institute |
| Wayne Hu | University of Chicago |
| Mr. Lam Hui | Columbia University |
| Dr. Dragan Huterer | University of Michigan |
| Dr. Jai-chan Hwang | Kyungpook National University |
| Ms. Victoria Jaggard | National Geographic News |
| Prof. Bhuvnesh Jain | Univ. of Pennsylvania |
| Mr. James Jeletic | NASA GSFC |
| Saurabh Jha | Rutgers University |
| Dr. Susan Kassin | Oxford University |
| Dr. Randy Kimble | NASA GSFC |
| Prof. Robert Kirshner | Center for Astrophysics |
| Mike Klesius | Air & Space Magazine |
| Prof. Lawrence Krauss | Case Western Reserve University |
| Dr. Jeffrey Kruk | Johns Hopkins University |
| Dr. Jeffrey Kubo | Fermi National Accelerator Laboratory |
| Mr. Tsz Yan Lam | University of Pennsylvania |
| Dr. Hubert Lampeitl | Institute of Cosmology and Gravitation, Portsmouth |
| Dr. Tod R. Lauer | NOAO |
| Dr. David Leckrone | NASA Goddard Space Flight Center |
| Dr. Michael Levi | LBNL |
| Eric Linder | UC Berkeley |
| Dr. Mario Livio | STScI |
| Dr. Fred K.Y. Lo | NRAO |
| Zhaoming Ma | University of Pennsylvania |
| Mr. John MacInerney | UCD |
| F. Duccio Macchetto | STScI |
| Adam Mantz | KIPAC |
| Dr. Morgan May | Brookhaven National Laboratory |
| Dr. Jeffrey Mirick | DoD |
| Dr. Bahram Mobasher | University of California, Riverside |
| Warren Moos | Johns Hopkins University |
| Dr. Jon Morse | NASA |
| Ms. Clara Moskowitz | SPACE.com |
| Dr. Matt Mountain | STScI |
| Dr. Seyed Mohammad S Movahed | Institute for studies in theoretical physics and mathematics |
| Dr. Ishwaree Neupane | Canterbury University |
| Dr. Jeffrey Newman | U. Pittsburgh |
| Dr. Malcolm Niedner | NASA GSFC |
| Dr. Hyerim Noh | Korea Astronomy and Space Science Institute |
| Dr. Antonella Nota | STScI |
| Dr. Rob Olling | University of Maryland |
| Linda Ostman | Stockholm University |
| Dennis Overbye | New York Times |
| Talia Page | TalkingScience |
| Lyman Page | Princeton University |
| Mr. Richard Panek | Author (Houghton Mifflin) |
| Prof. John Peacock | University of Edinburgh |
| Dr. Will Percival | Institute of Cosmology and Gravitation, Portsmouth |
| Dr. Saul Perlmutter | UC, Berkeley |
| Dr. Valeria Pettorino | Institute for Theoretical Physics, Heidelberg |
| Dr. Nor Pirzkal | STScI |
| Dr. Marc Postman | STScI |
| Tom Prince | Caltech/JPL |
| Prof. ANACLETO RIVERA | UAM- UNIVERSITY |
| Prof. Abdul Rahman | Howard University |
| Miss Sayeh Rajabi | Sharif University |
| Dr. David Rapetti | KIPAC (SLAC/Stanford) |
| Dr. Anais Rassat | CEA/Saclay |
| Dr. Bernard Rauscher | NASA Goddard Space Flight Center |
| Mr. Bill Reeve | Lockheed Martin |
| Dr. I. Neill Reid | STScI |
| Dr. Thomas Reiprich | Argelander Institute for Astronomy |
| Dr. Adam Riess | JHU/STScI |
| Dr. Massimo Robberto | STScI |
| Dr. Piero Rosati | ESO |
| Dr. Edward Ruitberg | NASA/GSFC |
| Dr. Shun Saito | University of Tokyo |
| Dr. Michael Salamon | NASA Headquarters |
| Mr. Devdeep Sarkar | University of California, Irvine |
| Mr. Utane Sawangwit | University of Durham |
| Mr. Philipp Fabian Schalldach | TLS |
| Dr. Marina Shmakova | KIPAC, Stanford |
| Dr. Robert Silverberg | NASA/Goddard Space Flight Center |
| Dr. Douglas Snyder | None |
| Dr. Rachel Somerville | STScI |
| Dr. Yong-Seon Song | Institute of Cosmology and Gravitation, Portsmouth |
| Prof. Paul Steinhardt | Princeton University |
| Dr. Massimo Stiavelli | STScI |
| Dr. Mark Sullivan | University of Oxford |
| Dr. Nicholas Suntzeff | Texas A&M University |
| Dr. Nao Suzuki | Lawrence Berkeley National Lab |
| Domenick Tenerelli | LMSSC |
| Dr. Kathleen Turner | U.S. Dept of Energy |
| Prof. Michael S Turner | Kavli Institute for Cosmological Physics |
| Prof. Tony Tyson | UC Davis |
| Mr. David Ventimiglia | Michigan State University |
| Prof. Licia Verde | Institute of Space Sciences, Bellaterra |
| Mr. Ray Villard | STScI |
| Mark Voit | Michigan State University |
| Prof. Yun Wang | Univ. of Oklahoma |
| Dr. Scott Watson | University of MIchigan |
| Dr. Arthur Whipple | NASA GSFC |
| Dr. Jennifer Wiseman | NASA Goddard Space Flight Center |
| Dr. Ed Witten | Institute for Advanced Study, Princeton |
| Dr. Michael Wood-Vasey | Harvard University |
| Bruce Woodgate | NASA/ Goddard Space Flight Center |
| Jacqueline Woodruff | Johns Hopkins Hospital |
| Dr. Hu Zhan | University of California at Davis |