NASA Detects Carbon Dioxide on Surface of Pluto's Moon Charon

<img width="600" height="243" src="https://www.sciencealert.com/images/articles/processed/charon-redd_600.jpg" alt="Astronomers have finally figured out what that big red smudge on Charon is"/>And that's not all they found.

https://www.sciencealert.com/nasa-detects-carbon-dioxide-on-surface-of-plutos-moon-charon