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- The mysteries of gaps and pile-ups at planetary resonances (YouTube)
University of Arizona, Origins Seminar, December 2022
- Pluto on the edge of strong chaos (YouTube)
University of Colorado-Boulder, APS Colloquium, April 2022
- Earth’s Quasi-Satellite (469219) Kamo`oalewa (.mp4)
Tsinghua University+, Virtual Seminar, December 2021
- New results on first order orbital resonances
XX Colóquio Brasileiro de Dinâmica Orbital 2020/2021, Invited presentation, December 2021 (YouTube)
IAU Symposium 364, Invited presentation, October 2021 (YouTube)
- Asteroid Belt Dynamics and Statistics (.mov)
AAS-DDA Meeting, Invited presentation, August 2020
- Planet migration in the solar system (.pdf)
Conference for University Women in Physics/University of Oklahoma, Invited presentation, January 2020
- The case for a deep search for Earth’s Trojan asteroids (.pdf)
The University of Arizona/Earths in Other Solar Systems, September 2019
- Prospects for Unseen Planets Beyond Neptune (YouTube)
Lecar Prize Lecture, Harvard-Smithsonian Center for Astrophysics, September 2018
- Prospects for Unseen Planets Beyond Neptune (.pdf)
Cornell University-Thomas Gold Lectures/Astronomy Colloquium, May 2018
- The mass distribution of planets (.pdf)
Invited Presentation — Special Session “Inner Solar Systems”, AAS-Austin, June 2017
- Planet Nine – TEDx Portland, April 2017 (YouTube)
- Corralling a distant unseen planet with extreme resonant Kuiper belt objects
DPS-EPSC (October 2016) (.mov, 0.7mb)
NOAO-FLASH (December 2016) (.mov, 1.7mb)
- Impact Seasons on Mars (.mov)
iPLEX/UCLA, Nov 2015
- The mass distribution of planets (.mov)
iPLEX/UCLA, Nov 2015
- Pluto, the Kuiper belt and the early history of the solar system (YouTube)
SETI Institute, July 2015
- A few points on the dynamical evolution of the young solar system (PDF)
AAS-DDA Meeting, April-May 2014
- Solar System(s) Science with LSST (PDF)
LSST-SAC Meeting, April 2014
- The Early History of the Solar System” (QuickTime)
IAS/CfA/PSI/IIT-D/OSU/UA, 2010-2011
- Asymmetric impacts of near-Earth asteroids on the Moon (QuickTime)
AAS-DPS Meeting, Oct 2009
- Migrating Planets (QuickTime)
LPL Evening Lecture, Sep 2009
- Speculating on additional planets and debris in the OGLE-2006-BLG-109L system (QuickTime)
AAS Meeting, June 2009
- On the importance of a few dwarf planets (QuickTime)
AAS Meeting, June 2009, public talk