International Space Station on Twitter: "Today's #SpaceStation20th fact: The acre of solar panels that power the station means sometimes you can look up in the sky at dawn or dusk and see
![orbital mechanics - Why does the ISS track appear to be sinusoidal? - Space Exploration Stack Exchange orbital mechanics - Why does the ISS track appear to be sinusoidal? - Space Exploration Stack Exchange](https://i.stack.imgur.com/FY7Z1.jpg)
orbital mechanics - Why does the ISS track appear to be sinusoidal? - Space Exploration Stack Exchange
![orbital mechanics - Why does the ISS track appear to be sinusoidal? - Space Exploration Stack Exchange orbital mechanics - Why does the ISS track appear to be sinusoidal? - Space Exploration Stack Exchange](https://i.stack.imgur.com/xAull.png)