Time: Remembering the Apollo 11 Moon Landing With the Woman Who Made It Happen. “Margaret Hamilton’s software got man to the moon—but she didn’t stop there.” By Lily Rothman, July 20, 2015.
Here’s Margaret Hamilton on Wikipedia.
What are Gravitational Waves?
MinutePhysics: Gravitational Waves Explained Using Stick Figures. (YouTube, 3 minutes)
Sommer-Brownies
Chili und Ciabatta: Himbeer-Frischkäse-Brownies – muss ich unbedingt mal backen, sieht sooo lecker aus!
I like Podcasts
One of my new favourite podcasts is the HumaNature podcast from Wyoming Public Media. Their first season has ten episodes, all of which you can download for free from their website. If you want to see if you like it before subscribing, listen to the bonus episode: Season 1 Recap.
Glass – liquid or solid?
Veritasium: Is Glass a Liquid? (YouTube, 7 minutes)
You might have heard the myth that very old glass windows are thicker at the bottom than at the top because glass is a liquid that flows very slowly. However, glass lenses in very old telescopes don’t show the same effect. This video explains both and the difference between solids and liquids.