Show HN: The Orbital Index Reaches Issue #40

Hey HN, I started Orbital Index 40 weeks ago based on feedback that I received on HN (https://news.ycombinator.com/item?id=19227434) and I've been sending it out weekly ever since. The response has been great, and readership just hit 2500 people. I just wanted to say "thank you" to HN for the motivation to start this, I've learned a ton. Here's issue #40! https://orbitalindex.com/archive/2019-11-26-Issue-40/ -Andrew