Date of Publication: 04.11.17.
Mars’ Ionosphere: Cold, Lifeless, and Filled With Heavy Metals
An artist's render of the MAVEN mission, upon arrival at Mars.NASA
Mars is Earth’s inhospitable cousin. And like anybody with a wayward family member, Earthlings can’t help trying to figure out what went wrong. So people throw a lot of money at the red planet, usually in the form of spacecraft. NASA’s Maven mission explores Mars’ upper atmosphere, puzzling over how a planet that was once wet and potentially habitable ended up a dry, cold desert world.
https://www.wired.com/2017/04/mars-ionosphere-cold-lifeless-filled-heavy-metals/