High octopuses don’t love you back, sextants in space, protect our ocean monuments, and more! Monday Morning Salvage: September 24, 2018

Logo for Monday Morning Salvage.

Foghorn (a call to action)

Flotsam (what we’re obsessed with right now)

  • Gulper Eels are amazing. Amazing.
There are approximately 30 vaquitas left in the world Illustration: Mona Chalabi

There are approximately 30 vaquitas left in the world
Illustration: Mona Chalabi

  • There are sextants on the International Space Station and I can’t stop thinking about it.

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Sailing by Starlight: the lost art of celestial navigation

This post is a slightly modified transcript of a talk I gave on celestial navigation. As some of you know, I like to build things, and I recently decided to build some classic navigational tools. Of course, in the process of building these instruments, I had to learn how they work. The history of celestial navigation is fascinating and deeply connected to the history of astronomy and mathematics. The original slide show can be found at the bottom of this post. Enjoy!

I’m going to begin with a seemingly simple question, then hopefully give you some basic tools to answer that question. Where are you?

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