I am working on organizing this page.
A few current items, including
some press coverage of my work and some of my
presentations to non-specialist audiences, appear below.
You may find something useful at this old page.
A short talk about Planet Nine at
on 2017-April-15 at 10 a.m.
Live-streaming at www.oregonlive.com
Search for Earth's Trojan Asteroids
Arizona Daily Star, February 2017
UA News, February 2017
Arizona Science, Episode 64, January 2017 (podcast)
The Daily Wildcat, January 2017
More evidence for ninth planet roaming Solar System's outer fringes
Los Angeles Times, 22 October 2016
The Guardian, 19 October 2016
Science Daily, 19 October 2016
Science News for Students, August 1, 2016
The Planetary Society, March 8, 2016
FiveThirtyEight, January 22, 2016
Seasonal Variation of Impacts on Mars
Travelers In The Night, show by Dr. Al Grauer at www.spreaker.com
An Update on Planet Nine
Susanna Kohler, AAS-NOVA, 24 June 2016
- On the hunt for a mystery planet
Alexandra Witze, Nature, 15 March 2016
Galaxy may teem with planets
Arizona Daily Star, January 27, 2016
- Exploring our Solar System's Past Through Pluto (podcast)
Arizona Science, Episode 10, January 2016
- Pluto, the Kuiper belt and the Early History of the Solar System (youtube)
SETI Institute Talks, July 2015
How often do Earth and Mars encounter Oort Cloud comets,
such as Mars' encounter with Comet Siding Spring on October 19, 2014?
for the answer
Weird orbit puzzles,
Arizona Daily Star, July 2015
"Baby photos of a scaled-up solar system"
UA News, November 2014
"A distant planet may lurk far beyond Neptune"
Science News, November 2014
"Kuiper Belt Missions Could Reveal
the Solar System's Origins"
Scientific American, October 2014
"Structure and Evolution of the Solar System"
Presentation at the UA Osher Lifelong Learning Institute, October 2014
Flandrau Planetarium, March 2014
"Our Solar System: It All Began in Chaos"
National Geographic Magazine, July 2013
NASA Solar System Exploration:People:Profile
Keynote speech for UA College of Science Honors Convocation, October 2012
"Slow-moving rocks provide better odds that life crashed to Earth from space"
UA News, September 2012
"The Early History of the Solar System" (QuickTime)
Biosphere 2, October 2011
What Would Happen If Earth and Mars
Scientific American, blog by George Musser, June 2011
Women In Planetary Science Blog-"51 Women in
interview by Kathryn Gardner-Vandy, April 2011
Solar system in Time" (QuickTime)
Golden Jubilee Conference on Women in Science & Technology, IIT-Delhi, March 2011
LPL Evening Lecture, September 2009
- "On the
importance of a few dwarf planets" (QuickTime)
AAS Meeting, June 2009
scattering and migration: lessons from Pluto"
The Great Planet Debate, Baltimore, MD, August 2008