Our Guests will always have an awesome space in our heart.

Slooh’s free live broadcasts of asteroids, comets, transits, eclipses, etc. feature narration by numerous astronomy experts including, but not limited to, the incredible assortment listed below, and are syndicated to media outlets such as NBC, ABC, CNN, Fox News, National Geographic, Wired, The Weather Channel and more. We are grateful to our guests for helping us to bring color and character through the years to live celestial events, while entertaining and informing viewers from across the globe.



Dr. Jonathan Lunine

Jonathan Lunine is the David C. Duncan Professor in the Physical Sciences at Cornell University, where his research involves planets and the life they may or may not host. He holds strong ties to the Cassini mission and is a renowned expert on Saturn and its moons. For the 2015 Saturn Opposition, Dr. Lunine joined Slooh for a live broadcast on the ringed planet for a fascinating discussion about Titan, Enceladus, and the potential for life in this planetary system.


    Lindley Johnson

    Lindley Johnson is the NASA Program Executive for the Near Earth Object Observations Program. Recently, he has come on a Slooh show during Asteroid 2002 CU11's close approach to Earth to talk about the objects near and around our planet. This included a discussion of NASA and Slooh's partnership to encourage amateurs tracking Near Earth Asteroids.


      Darlene Cavalier

      Darlene Cavalier is an advocate for the public participation in science and science policy. She is the founder of both Science Cheerleader and SciStarter, which both endeavor, in their own ways, to provide the public with a voice in the STEM realm. Ms. Cavalier joined the Slooh team live on our September Full Moon broadcast of 2014, participating in a passionate discussion on the topic of citizen science.


        Deborah Byrd

        Deborah Byrd is a science journalist and Editor-In-Chief of EarthSky, a website that serves as an incredible hub of knowledge for the amateur astronomer on upcoming celestial phenomena. She has made guest appearance on multiple Slooh shows, including our coverage of the Orionid Meteor Shower of 2014, where she shared with the Slooh audience the wealth of astronomy knowledge we see across her numerous articles on EarthSky.


          Dr. Paul Chodas

          Paul Chodas is the manager of the Near Earth Object (NEO) Program at NASA Jet Propulsion Laboratory (JPL). As Asteroid 2004 BL86 made its close approach to Earth in January of 2015, Dr. Chodas came on as a guest for Slooh's live asteroid tracking special to give Slooh's audience NASA insight and perspective into this asteroid and the NEO program.


            Timothy Ferris

            Timothy Ferris is a prominent science writer and best-selling author with a dozen published books. An occasional guest on live Slooh shows, he most recently appeared on Slooh's coverage of the total lunar eclipse of 2014. He is currently an emeritus professor at the University of California, Berkeley.

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              Matt Francis

              Francis has been a key feed partner with Slooh for over 3 years. He is the director of the Prescott Observatory in Prescott, Arizona which houses a 0.61 meter telescope, a high-mag solar telescope and a Nano lab. He has provided commentary on several broadcast such as the Earth’s Closest Approach to the Sun Broadcast. His chief interest is exploring how consciousness and physical laws interact to define reality.


                Dr. Mark Boslough

                Dr. Boslough is a member of the technical staff at Sandia National Laboratories and a professor at the University of New Mexico. He appeared on the Moby Dick asteroid broadcast providing a unique take on the effects of asteroid impacts on Earth. Dr. Boslough traveled to Russia to study the effects of potential asteroid impacts shortly after the infamous meteor explosion over Chelyabinsk in February 2013.


                  Dr. Lucie Green

                  Dr. Green has joined several Slooh Solar broadcast including Solar Max updates. She offers a relaxed and intuitive approach in explaining complex solar phenomena. She is a solar scientist at the Mullard Space Science Laboratory of the University College London. She also frequently contributes to a host of media outlets including BBC, ITV, and as a part of BBC’s popular Sky at Night team.


                    Dr. Duncan Copp

                    Dr. Copp has appeared as a guest on several Slooh broadcast such as the Chinese Lunar Landing where he provides an extensive knowledge of the Moon and humanity’s connection with it. He is an accomplished documentary director/producer who is most noted for his role in producing the award winning film In the Shadow of the Moon.


                      José Luis Galache

                      José Luis studied physics at the Universidad Complutense de Madrid, Spain. He continued with an MPhys in Nuclear Astrophysics at the University of Surrey, UK and a PhD in Astronomy at the University of Southampton, UK. He currently works at the Minor Planet Center.


                        Dr. Steve Levin

                        Dr. Levin is the Project Scientist of NASA’s Juno Flyby broadcast to explain the details of the mission and the reason for the spacecraft’s brief return. He has over 20 years of experience with JPL working in development and operations on various astrophysics and planetary missions.


                          Dr. Scott Bolton

                          Dr. Bolton is the Principal Investigator of NASA’s Jet Propulsion Laboratory’s Juno Spacecraft which is currently on its way to Jupiter to provide new data and analysis of the gas giant. Dr. Bolton appeared on a special night-long broadcast of Jupiter to discuss the amazing planet and Juno’s mission. He has 24 years of experience with JPL working on a vast array of missions including Cassini, Galileo and Voyager.


                            Dr. Ed Lu

                            Dr. Lu is the CEO and Co-founder of the B612 Foundation which aims to create a real world solution to protecting the Earth from potentially catastrophic asteroid impacts. Dr. Lu and the B612 Foundation teamed up with Slooh to promote awareness of this important concern through one of our live public broadcast. Dr. Lu was also a NASA astronaut for over 12 years and spent over 206 days in space during his career.


                              Tariq Malik

                              Tariq Malik is an astronomy journalist and the Managing Editor for Space.com, which has compiled a large quantity of articles that include mentions of Slooh's live coverage of celestial events. Mr. Malik most recently came on Slooh's live show of the total lunar eclipse of 2014, joining us to marvel and converse about eclipses and the Moon.