Sea salt embedded in the dusty surface of Mars and lofted into the planet’s atmosphere has led to the discovery of hydrogen chloride—the first time the ESA-Roscosmos ExoMars Trace Gas Orbiter has detected a new gas. The spacecraft is also providing new information about how Mars is losing its water.
![](https://scx1.b-cdn.net/csz/news/tmb/2021/exomarsdisco.jpg)
Source:
https://phys.org/news/2021-02-exomars-gas-loss-mars.html