Scientists say they're 'confident' polygon features seen on Mars were formed by MUD, suggesting lake

[Judi Lynn]

It’s thought that Mars’ Gale Crater may have been filled with lakes roughly 3.5 billion years ago

Analysis of observations from NASA’s Curiosity rover has confirmed lines in 'Old Soaker' rock are mudcracks

The researchers say their position near the center of where a lake bed once sat indicated levels fluctuated
By CHEYENNE MACDONALD FOR DAILYMAIL.COM

PUBLISHED: 17:45 EDT, 20 April 2018 | UPDATED: 17:45 EDT, 20 April 2018

Scientists say a coffee-table sized slab of Martian rock dubbed ‘Old Soaker’ offers a unique glimpse into the red planet’s watery past.

And in some ways, it looks a lot like Earth.

It’s thought that Mars’ Gale Crater may have been filled with lakes roughly 3.5 billion years ago – and, last year, scientists revealed they’d discovered what could be cracks left behind by mud.

Now, further analysis of the observations from NASA’s Curiosity rover suggests the lines are, in fact, mudcracks, indicating that the once-wet region experienced dramatic changes over the course of its life.

More:
http://www.dailymail.co.uk/sciencetech/article-5640345/Scientists-say-theyre-confident-polygon-features-seen-Mars-formed-MUD.html