Learn the Northern Summer Constellations
Although Summer nights can be short, at least it's warmer! If you're outside under a starry Summer sky (in the Northern Hemisphere), here are the constellations you can learn to identify. Note: All the images below are screenshots I took from the free...
My Astronomy Lectures Are Now Public on YouTube
Now that I’ve transitioned from teaching high schoolers during my PhD research years to working in industry, I’ve decided to make my lecture videos public. My course is from my perspective as a Catholic scientist and is divided in two halves:• The History of...
Brilliant Chess Moves from My Recent Games
I've been playing on Chess.com since late 2018. You can find me here or by searching for DoctorAragorn. I'm what you might call a serious hobbyist. After each game ends, a Chess.com engine classifies every move into one of the following categories:• Blunder: A very...
Making Quick Plots with Python and Matplotlib
Imagine being able to generate a plot with only one line of code. After I had spent some time coding in Python and generating plots in Matplotlib, I decided to make some shortcuts for each time I wanted to see a simple plot. Although plot_assistant was born in 2017,...
Extraterrestrials, AI, and Minds Beyond the Human
"Extraterrestrials, AI, and Minds Beyond the Human" was the title of the Society of Catholic Scientists Conference that was held June 4-6, 2021. Members met in Washington, D.C., while others (like myself) tuned in to a livestream of the talks. Here I do not wish to...
April-May Crash Course in Astronomy Is Open
"Astronomy is so cool, but it's all over my head," is a concept I hear a lot. This may be the case for you, but it doesn't have to stay that way. In just 7 weeks, I can bring you up to speed with my Astronomy crash course. The first half of the course takes a...
Debuting My High School Astronomy Course on the Kepler Education Platform
This Fall I will be teaching Astronomy for high schoolers on the Kepler Education platform. You can view and sign up for my course here!
Astronomy Interview
Joffre Swait from Kepler Education interviewed me on various topics of astronomy this afternoon. We talked about the calendar, why Pluto is not a planet, the Astronomy course I'm offering this Fall with Kepler Education, and more.
Website Updates
After a year-and-a-half hiatus from blogging, I intend to resume semi-regular blog posts, but with significant changes to my website. I'm moving from the somewhat playful josephskywalker.com to the more professional jahearn.com. This is in part due to my...
Astronomy Q&A Live Stream
On April 9 I hosted my first Astronomy Q&A live stream on Facebook. I responded to questions about the planets and then to questions made to me by viewers of the live stream. It was fun but wore me out. If I do another live stream in the future, I may reduce the...
Astronomy Q&A Live Stream Announcement
After getting your feedback, I've scheduled my first Astronomy Q&A live stream for Monday, April 9, at 6:45 pm Pacific Time via Facebook Live. I'll start out by answering questions about the planets that middle- and high-schoolers of Summit Academy in Cottonwood...
Why Does Spring Start March 20?
The first day of spring and the first day of fall happen on equinoxes, when the plane of Earth's equator passes through the Sun's center. Day and night are appoximately (but not exactly) of equal length. Before Julius Caesar introduced his calendar in 45 BC in order...