Introducing Aswin Sekhar

Dr Aswin Sekhar is a solar system dynamicist at Armagh Observatory & Planetarium, Northern Ireland. His work mainly focuses on the dynamical evolution of small solar system bodies like meteoroids, comets and asteroids.

He is the first professional meteor astronomer from India. In addition to research, he contributes popular science articles to various national and international media. He does multiple science public outreach projects in India for rural schools and university students.

Apart from sciency stuff, he enjoys swimming, badminton, cricket, chess, experimenting various Indian recipes, playing Tabla (Indian drums), treks on mountains, sipping beer near beaches and gambling card games for non-astronomical sums of money! Having said all this, he is not an expert in any of these things mentioned above!



Re-introducing Kat Volk

I’m Kat Volk (@kat_volk), a staff scientist at the University of Arizona’s Department of Planetary Sciences/Lunar and Planetary Laboratory in Tucson, Arizona. My research mostly involves a mix of theoretical and observational studies of trans-Neptunian objects (aka Kuiper belt objects) in the outer solar system, with a focus on how their orbits can help us understand the dynamical history of the giant planets in our solar system. I also study the dynamics of exoplanet systems like those discovered by the Kepler mission.

I got my PhD in planetary science from the University of Arizona in 2013. I then spent two years working at the University of British Columbia in Vancouver, Canada, mostly as part of the Outer Solar System Origins Survey (OSSOS) which discovered more than 800 objects in the outer solar system. I moved back to Tucson in 2015 to continue a variety of research projects. You can find research updates on my website:

Introducing Tim Holt

Tim Holt (@timholtastro )is an Australian PhD candidate at the Centre for Astrophysics, University of Southern Queensland. The commute is a bit far though, as he currently has an office at the Southwest Research Institute in Boulder, CO, USA. He is in his second year of a PhD working on the Taxonomy and Dynamics of small Solar system bodies, with a primary focus on the Jovian Trojan Asteroids. There are two aspects to this work, using n-body simulations to look at the dynamics of families, and borrowing a technique from biology, cladistics for the taxonomy.

In a previous life, Tim spent his undergraduate at the University of Queensland digging up Dinosaurs. There were some diversions in retail, and a stint as a high school science teacher, before eventually settling in Astronomy with Swinburne Astronomy Online.

Besides science, Tim enjoys Sci-fi in it’s many forms, especially Internet Spaceships (Eve Online), books, IT stuff, board games and traveling.

Introducing Simon Porter

Simon Porter (@ascendingnode) is a Research Scientist at the Southwest Research Institute in Boulder, Colorado. He is a Co-Investigator on NASA’s New Horizons extended mission to encounter the cold classical Kuiper Belt Object (KBO) 2014 MU69. On the mission, he focuses on the small satellites of Pluto, determining the orbit of 2014 MU69, and the other KBOs that New Horizons is passing along the way. This summer, he is supporting the stellar occultations of MU69s, in South Africa, aboard SOFIA, and in Patagonia. In addition to mission work, he studies the orbital and tidal dynamics of other binary and triple KBOs and Centaurs.

Simon is originally from Burlington, Ontario, Canada, and grew up there, Oxfordshire, and Tennessee. He received a BS in Physics from the University of Alabama in Huntsville, and was a undergrad Space Grant intern at the Jet Propulsion Laboratory. He received his PhD in Astrophysics from the School of Earth and Space Exploration at Arizona State University, and was a Predoctoral Fellow at Lowell Observatory. Simon enjoys hiking, aerospace history, and identifying obscure aircraft/rockets/spacecraft.