Oh, how I loved to sail my dinghy on the oceans of Mars.
Surf’s Up on Mars!
“Global warming”?
They had global warming on Mars.
Let’s send Al Gore there to look for sad Polar Bears.
With air pressure of about .087 psi, you’ll need some strong winds to set sail ....
the atmosphere that created a global warming or...
Those two are the money quotes, with the magic words, that help pay the Scientist that wrote it (and cover his kids braces, college, etc).
It’s likely, he added, that Tharsis spewed gases into the atmosphere that created a global warming or greenhouse effect that allowed liquid water to exist on the planet, and also that volcanic eruptions created channels that allowed underground water to reach the surface and fill the northern plains.
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The Martians fixed global warming and look what it got them; an arid, cold planet. Bet they wished they had global warming now.
That Mars once had water is almost without doubt. Water can be found every where throughout the universe. Just how much water Mars had and how it was distributed across the planet is another story. The prevailing theory as to why there is none existing as surface water on Mars is that the planets inner core cooled down to the point where Mars lost it’s magnetic field which led to it’s losing it’s atmosphere and when that happened extreme radiation bathed the planet, as it still does and the water was, in effect, boiled away.