Mars.

[magnetaress]

Scientists have now found evidence that Mars went through the same phase as Earth before both planets got their atmospheres — something that has not been proven until now.

https://www.syfy.com/syfywire/more-evidence-mars-could-have-once-been-like-Earth?amp

https://i.imgur.com/WZYkaGj.jpg

P.s. thread is not about perseverance, it's about mars.