Ping!.....................What’s next? Timeshares?..............
Mars may have had open water for a brief period of its history. It’s low gravity and tiny magnetosphere meant a planet that could not keep a waterey environment for very long.
The main thing is to be able to get enough manpower onto Mars, get underground and activate the alien-created oxygenation machine to fix the atmosphere. Then we can worry about restoring the beaches. But in the meantime we can ship everyone in Gaza there as an advance scouting team.
Cool!
Didn’t John Carter of Virginia map these oceans?

Paging Immanuel Velikovsky.

I wonder if the same water from the heavens mentioned in Genesis was from asteroids that our solar system intercepted which could have showered more than just earth.
This picture is from the result of the Lake Missoula flood that ripped through Montana, Idaho, and Washington some 12,000 years ago. I would expect to see pictures like this from Mars if it also experienced ice ages which formed dams which then broke loose during warming ages