article What is the Kármán line?

You may have heard people refer to the “edge of space” – 100km – as the Kármán line. But what does that mean, and what’s so significant about it? Simply put, the Kármán line is loosely defined as the altitude at which a fixed-wing aircraft would need to travel faster than orbital velocities to produce enough lift. This is a bit of a complex concept to understand, so I’ll break it down. Read more (1 min)

article A Brief Recap of Reusable Rockets

In the decades since the first rockets flew, the only launch vehicle capable of any kind of reuse was the Space Shuttle, which required in-depth inspection and refurbishment after each flight. Meanwhile, SpaceX and Blue Origin, among others, are revolutionizing the space launch industry and building rockets that can – and have – been reused. What's changed, and why is reusability coming back? Read more (14 min)

post Transcript of Tom Mueller's speech interview on May 2, 2017

Background info

On May 2, 2017, Tom Mueller, propulsion CTO at SpaceX, conducted a speech/interview with some members of the New York University Astronomy Society. This was streamed live on Twitch; I’ve transcribed it with the help of u/dansemacabred2, u/jclishman, and u/Zucal. Many thanks!

Check out the interview on, and the post in the SpaceX subreddit.

Read more (38 min)

post I'm now on Patreon.

For some background, I’m currently creating all of my illustrations from a 2012 laptop (Lenovo T430, if you’re curious,) and it’s… not the ideal 3D graphics computer, to say the least. I’d love to upgrade, but it’s only necessary for 3D work; and I was (understandably) wary to spend money on a new computer without any way to recover the costs.

So I’ve made a Patreon page. Apparently, people actually like my work enough to send me some money for it; until now, the only way was via RedBubble (where I get 30% of the total item cost), or direct donations. Hopefully, there will be more incentive for people to pledge to me on Patreon, thanks to the rewards.

Read more (2 min)