Mars is covered in evidence of ancient lakes, rain and snow — but scientists aren't sure how that's possible

[Admin]

Valleys on Mars suggest the Red Planet was once covered in flowing water — but it's still a mystery how that could have been.

Mars is covered in evidence of ancient lakes, rain and snow — but scientists aren't sure how that's possible : Read more

 

[BrianAmbrose]

The idea of lakes etc on Mars is difficult for scientists because of the Standard Model of the Solar System. However if Mars was once very hot, and that all the planets were once very hot, many difficult issues would disappear. I am working on a new model, it explains the energy in the cores of the planets, why the placement of the planets are there according to Titius-Bode, the origin of moons (including Moon), for just a few of the radical ideas in this new model.

 

[contrarian]

The idea of lakes etc on Mars is difficult for scientists because of the Standard Model of the Solar System.

The deuterium/hydrogen ratio on Mars is much higher than on Earth. This suggests a loss of large amounts of hydrogen vs. deuterium from Mars over time, which likely resulted from photo-dissociation of water and preferential escape into space of lighter hydrogen from its atmosphere.

The surface features alone should demonstrate the prior presence of large amounts of liquid water. The difference in D/H ratio certainly supports this notion. I don't understand the problem with lots of water on Mars or Earth with all those comets still lurking around in the outer solar system.

NASA Astrobiology

Data from Curiosity Provides Information about Mars' early Climate and the Potential for Prebiotic Chemistry

astrobiology.nasa.gov