I have a long history as an IT professional, with some significant projects under my belt. Here are a few select examples from my "portfolio":

• Canadian Patent Office Automation Master Plan – March 31, 1988
  I wrote at least half of this document, prepared most of the diagrams, most of the calculations presented therein.
• Integrated Spectrum Observation Center Manual – January 2015
  The ISOC was my largest software project, ~120,000 lines of code in total, and I also wrote this manual, along with some design documentation and an API reference.

I have attended several conferences and gave talks at other venues. Here are some select presentations:

• Metric symmetry by design: A Lagrangian perspective with computer algebra adventures, seminar given at the Cosmology group of Arizona State University, Tempe, Az, April 15, 2026
• Radio-metric navigation and the Pioneer Anomaly, talk given at the Canadian Center for Experimental Radio Astronomy Summer Camp in Carp, Ontario, August 2, 2024
• From stellar systems to the CMB: MOG across 15+ orders of magnitude, invited talk given on January 18, 2024, at the Challenges of Modern Cosmology workshop organized by the Universidad Complutense de Madrid (see also its video recording)
• Look before you leap: Using the Solar Gravitational Lens to explore exoplanets, talk given at the 8th Interstellar Symposium, Montreal, QC, July 10, 2023
• The Solar Gravitational Lens: Imaging Exoplanets, virtual talk via ZOOM, given to the North Houston Astronomy Club, May 28, 2021
• Retro-gaming podcast interview (December 22, 2020 – in Hungarian) about my participation in the early days of game development in Hungary and about my more recent work
• Gravitáció a Naprendszerben - talk (in Hungarian) given (see also its video recording) at the 2020 Fazekas-festival on March 4, 2020 in Budapest
• The theory of the Solar Gravitational Lens, outline of a brief, informal talk (no slides) given at the Perimeter Institute on October 18, 2018
• TianQin - Spacecraft Navigation and Mission Simulation, talk given at the 3rd TianQin workshop in Guangzhou, China, on December 9, 2015
• Cosmological consequences of Modified Gravity (MOG), talk given at the International Conference on Two Cosmological Models, Universidad Iberoamericana, Ciudad de México, November 17-19, 2010
• My Pioneer anomaly presentations, including
  • My Pioneer anomaly talk given at The Perimeter Institute on April 4, 2013
  • My Pioneer anomaly colloquium, given at Carleton University, Ottawa, on September 18, 2012.
  • My Pioneer seminar presentation at the Perimeter Institute on May 27, 2011, also with video.
  • Background notes on the thermal recoil force, presented on my behalf by Slava Turyshev at the third Pioneer Explorer Collaboration Team Meeting at ISSI, Bern, Switzerland, February 18-22, 2008.
  • My independent analysis of Pioneer Doppler data, my analysis of Pioneer 10 and 11 telemetry, and my thermal analysis of the Pioneer 10 and 11 spacecraft, presented at the second Pioneer Explorer Collaboration Team Meeting at ISSI, Bern, Switzerland, February 19-23, 2007.
  • My Pioneer anomaly lecture, given at Carleton University, Ottawa, on October 16, 2006.
  • My presentation on the Pioneer spacecraft and the recovered telemetry, presented at the first Pioneer Explorer Collaboration Team Meeting at ISSI, Bern, Switzerland, November 7-11, 2005.
• Humidification requirements in economizer-type HVAC systems, ASHRAE Winter Conference, Dallas, TX, Jan 30, 2013

Some of my answers on Quora were featured online by Forbes Magazine, The Huffington Post, Apple News and other media outlets. I also wrote a couple of articles for non-peer reviewed magazines:

1. On Modified Gravity, Viktor T. Toth, invited Letter to the Editor in Inference: International Review of Science, Vol. 6, No. 1, April 2021, DOI: 10.37282/991819.21.12
2. A rádiójelekbe merülő világ (The world swallowed by radio waves -- in Hungarian), L. Viktor Toth and Viktor T. Toth, Élet és Tudomány 2020/43, pp. 1360-1362.
3. What is Dark Matter, Apple News, July 1, 2019; also as What Is Dark Energy, Forbes Tech, July 9, 2019
4. Have We Ever Explored a Black Hole? This Answer Will Surprise You, Apple News, April 1, 2019; also as What Would It Take To Send A Probe All The Way To A Black Hole?, Forbes Tech, April 26, 2019
5. Why Has More Than One Person Solved Einstein's Equations?, Mental Floss, March 13, 2019
6. Why Is The Andromeda Galaxy Moving Towards Us If The Universe Is Expanding?, Forbes Tech, February 21, 2019; also as How Is the Andromeda Galaxy Moving Towards Us If the Universe Is Expanding?, Apple News, March 20, 2019
7. How Many Light Years Away From the Sun Are We?, Mental Floss, February 6, 2019
8. When And How Will Our Sun Eventually Die?, Forbes Tech, January 9, 2019; also as Will the Sun Ever Stop Shining?, Apple News, January 14, 2019 and as Will the Sun Ever Stop Shining?, Mental Floss, January 14, 2019
9. Does Sound Travel Faster or Slower in Space?, Mental Floss, October 22, 2018
10. Why Is The Big Bang Theory Taught If It's Just A Theory?, Forbes Tech, October 11, 2018
11. In The Distant Future, All Black Holes In The Universe Will Share The Same Fate, Forbes Tech, September 28, 2018; also as What Is the Life Span of a Black Hole?, Apple News, October 19, 2018
12. Could A City-Destroying Asteroid Ever Hit Earth Without Being Detected?, Forbes Tech, September 13, 2018; also as Could a Comet Hit Earth Without Detection?, Apple News, September 13, 2018
13. How Do We Verify Facts About Black Holes?, Forbes Tech, August 14, 2018; also as How Do We Know That Black Holes Exist?, Apple News, August 25, 2018
14. Does Anything Other Than Light Travel At The Speed Of Light?, Forbes Tech, July 2, 2018; also as Does Anything Travel Faster Than Light?, Apple News, July 6, 2018
15. Will There Ever Be Cell Phones That Don't Emit Radiation?, Forbes Tech, June 8, 2018; also as Will There Ever Be Cell Phones That Don't Emit Radiation?, Apple News, June 12, 2018
16. How Do We Know The Universe Is Infinite?, Forbes Tech, May 23, 2018; also as Is the Universe Infinite?, Apple News, May 23, 2018
17. What Does It Mean When Particles Are 'Entangled'?, Forbes Tech, April 10, 2018; also as A Simple Explanation of Quantum Entanglement, Apple News, April 18, 2018
18. Will Quantum Physics Ever Replace the Theory of Relativity?, Apple News, February 28, 2018
19. What's Wrong With Newtonian Gravity?, Forbes Tech, February 8, 2018; also as Why Aren't Newtonian Gravity and General Relativity Compatible?, Apple News, February 8, 2018
20. Why Are Hydrogen And Helium The Most Abundant Elements In The Universe?, Forbes Tech, January 29, 2018; also as Why Are Hydrogen and Helium the Most Abundant Elements?, Apple News, January 31, 2018; and as Pourquoi l'hydrogène et l'hélium sont-ils les éléments les plus communs de l'Univers?, Slate FR, January 12, 2019
21. How Accurate Is the Term ‘Theory of Everything’ in Physics?, Huffington Post, January 10, 2018; also as What Does The 'Theory Of Everything' Really Mean In Physics?, Forbes Tech, January 10, 2018
22. How Do We Know There Are Black Holes?, Huffington Post, January 3, 2018; also as Are There Any Gaps In Black Hole Theory?, Forbes Tech, January 8, 2018; and as How Do We Know That Black Holes Are Really Real?, Apple News, January 27, 2018
23. What’s Missing From the Big Bang Theory?, Huffington Post, December 22, 2017; also as Is The Big Bang Theory Incomplete?, Forbes Tech, December 26, 2017; and as What's Missing From the Big Bang Theory?, Apple News, January 25, 2018
24. How Do Quantum Fields Relate to the Way We Experience Everyday Life?, Apple News, December 19, 2017; also as What Is A Quantum Field, And How Does It Interact With Matter?, Forbes Tech, December 20, 2017; and as Think Quantum Fields Are Confusing? They’re What We’re Accustomed to Calling Matter, Huffington Post, December 20, 2017
25. How Cold Is Outer Space?, Forbes Tech, November 30, 2017; also as Exactly How Cold Is Space?, Huffington Post, November 29, 2017
26. Does Time Really Exist? According To Physics, That's The Wrong Question Entirely, Forbes Tech, November 28, 2017; also as Does Modern Physics Prove That Time is An Illusion?, Huffington Post, November 28, 2017
27. Why Are Photons Considered Particles?, Forbes Tech, November 14, 2017; also as Are Photons Particles or Electromagnetic Waves? How Can They Be Both?, Huffington Post, November 14, 2017
28. Do Seemingly Unsolvable Science Questions Point to a Supernatural Force?, Huffington Post, October 26, 2017; also as What We Know (And Don't Know) About The Very Beginning Of The Universe, Forbes Tech, November 3, 2017
29. How Does a Gaseous Sun Have Gravitational Pull on Solid Planets?, Huffington Post, October 9, 2017; also as The Sun Is Not Solid But Its Gravitational Pull On Earth Is Unaffected, Here's Why, Forbes Tech, October 10, 2017; and as How Does the Sun Have Gravitational Pull on Planets When It Is All Gas?, Apple News, January 20, 2018
30. What Existed Before the Big Bang?, Huffington Post, October 4, 2017; also in Forbes Tech online, October 5, 2017; and as What Was There Before the Big Bang?, Apple News, April 23, 2018
31. Would The Universe Still Exist If No Life Existed To Observe It?, Forbes Tech online, September 25, 2017; also as Would the Universe Exist If There Was No One to Observe It?, Huffington Post, September 25, 2017; and as Would the Universe Exist If We Didn't Observe It?, Apple News, January 13, 2018
32. What Causes Cosmic Voids?, Forbes Tech online, September 12, 2017; also as Why is There So Much Empty Space in Space?, Huffington Post, September 13, 2017; also as What Causes Cosmic Voids?, Apple News, January 4, 2018
33. Does The Universe Have Physical Boundaries?, Forbes Tech online, August 29, 2017; also as Does the Universe Have Physical Boundaries?, Huffington Post, August 30, 2017; and as Does the Universe Have Observable Boundaries?, Apple News, December 16, 2017
34. Theoretical Physics Is More Important To Everyday Life Than Most People Think, Forbes Tech online, July 19, 2017; also as Why Should Normal People Bother Learning About Theoretical Physics?, Huffington Post, July 20, 2017; and as Modern Life's Practicalities Are Built on a Foundation of Theoretical Physics, Apple News, August 16, 2017
35. Is There Anything That Can Travel Faster Than Light?, Forbes Tech online, July 13, 2017; also as Why Can't Anything Move Faster Than the Speed of Light?, Huffington Post, July 11, 2017; and as Is It True That Nothing is Faster Than Light?, Apple News, August 8, 2017
36. Why Does Our Sun – a White Star – Appear to Be Orange?, Huffington Post, June 26, 2017; also as Our Sun Is A White Star, So Why Does It Appear Orange?, Forbes Tech online, June 27, 2017; as What Makes the Sun Appear Orange?, Apple News, July 3, 2017; as Why Does the Sun Appear Orange, Mental Floss, July 7, 2017; and as Why Does the Sun Appear Orange, MSN, July 7, 2017
37. Why Nuclear Reactor Meltdowns Create Radiation That Lasts For Centuries, Forbes Tech online, June 21, 2017; also as Nuclear Bombs and Nuclear Reactor Meltdowns Affect the Environment in Very Different Ways, Huffington Post, June 22, 2017
38. If Time Freezes At The Edge Of A Black Hole, Could Someone Theoretically Live Forever?, Forbes Tech online, May 25, 2017; also as Is it Possible to Live Forever at the Edge of a Black Hole? Huffington Post, May 31, 2017; and as Since Time Freezes at the Edge of a Black Hole, Could You Live Forever There?, Apple News, June 4, 2017
39. The Marriage Of Einstein's Theory Of Relativity And Quantum Physics Depends On The Pull Of Gravity, Forbes Tech online, May 17, 2017; also as Can Quantum Physics and Relativity Co-Exist?, Huffington Post, May 18, 2017; and as The Ongoing Conflict Between Einstein's Relativity and Quantum Physics, Apple News, May 23, 2017
40. Why Do General Relativity And Quantum Mechanics Need To Be Unified?, Forbes Tech online, April 13, 2017; also as Why Is It Important to Reconcile Quantum Mechanics and General Relativity?, Huffington Post, April 14, 2017
41. A History Of The Scientific Understanding Of Heat, Forbes Tech online, March 31, 2017; also as The Scientific Theory That Failed Combustion Engine Advancement, Huffington Post, April 3, 2017
42. Will The Sun Become A Black Hole When It Dies?, Forbes Tech online, March 20, 2017; also Huffington Post, March 21, 2017
43. Why Is the Speed Of Light Considered The Cosmic Speed Limit?, Forbes Tech online, March 13, 2017
44. Why Can't Scientists Find Planet 9?, Viktor T. Toth, Forbes Tech online, January 31, 2017
45. If Energy Can't Be Created Or Destroyed, Why Can We Use It?, Viktor T. Toth, Forbes Tech online, January 4, 2017
46. How Astronomers 'See' Cosmic Events From 12 Billion Years Ago, Viktor T. Toth, Forbes Tech online, December 27, 2016
47. Why Einstein's elegant theory of relativity has stood the test of time, Viktor T. Toth, Forbes Tech online, December 2, 2016
48. Nobody has proved Einstein wrong about relativity, but people are still trying, Viktor T. Toth, Forbes Tech online, November 30, 2016
49. Is theoretical physics a waste of resources?, Viktor T. Toth, Forbes Tech online, September 14, 2016
50. Are we alone in the Universe?, Viktor T. Toth, Forbes Tech online, July 19, 2016
51. Finding the Source of the Pioneer Anomaly, Viktor T. Toth and Slava G. Turyshev, IEEE Spectrum, December 2012 (cover story)
52. Study of the Pioneer Anomaly: A scientific detective story, Viktor T. Toth, arXiv:0903.0075 [physics.space-ph], invited article in The Postgraduate Magazine 2007;1:24-30 (School of Mathematics and Statistics, University of Newcastle Upon Tyne)