These images are as close as any of us are getting to Mars any time soon—but they're beautiful enough to be a worthy consolation prize.
Is the briny sludge teeming with tiny organisms?
And the ice formations would be ideal locations for finding life, if it exists.
The agency is set to announce details on Thursday at 2 p.m. ET.
Because Mars isn't geologically active, it could provide a window to the formation of life.
Experts say the recent discovery that liquid water may run on the Martian surface changes the conversation about the Red Planet's habitability.