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Special 100th Astronomy on Tap

Monday, June 12, 2023
7:30pm to 9:30pm
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"Planet Nine" and "Bringing Mars to Earth"
Mike Brown, Richard and Barbara Rosenberg Professor of Planetary Astronomy, Caltech,
Laurie Leshin, Director, NASA Jet Propulsion Laboratory,
  • Public Event

Is there really an undiscovered massive planet in the outer solar system? How will we bring a piece of Mars back to Earth and what will it reveal? Join us for our 100th Astronomy on Tap on Monday, June 12th at 7:30PM with our special guests Director of NASA JPL Dr. Laurie Leshin and Caltech Professor and Pluto-Killer Dr. Mike Brown. We'll host two ~15 minute talks, Q&A, live music with Jason Achilles and Forrest Mitchell, and then follow it up with interactive, astronomical pub trivia, and guided stargazing at our next Astro on Tap!

7:30 p.m. - Bringing Mars to Earth
8:20 p.m. - Planet Nine from Outer Space
9:10 p.m. - Astro-themed Pub Trivia Answers and Prizes

About the Series

Astronomy on Tap is a global phenomenon where professional astronomers give informal science talks in local bars with accompanying pub trivia and interactions with the public. Scientists at Caltech organize the Los Angeles Chapter of Astronomy on Tap one Monday a month. We host these free events which are open to all at the outdoor patio of the Dog Haus Biergarten in Old Town Pasadena (with inexpensive parking structure one block away).

Each event consists of two ~15-minute informal science talks given by researchers in astronomy, physics, and space science followed by Q&A. In the intermission periods, we have guided stargazing with telescopes, astro-themed pub trivia, and live music from Jason Achilles and Forrest Mitchell. For more information and recordings of past events, please see the Caltech Astro Outreach website and the Caltech Astro YouTube page.

For more information, please contact Cameron Hummels by email at