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Comparison of a picture from Mars (left) to a picture from Earth (right) (lemmy.world)

submitted 1 month ago by The_Picard_Maneuver@lemmy.world to c/space@lemmy.world

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[-] Yokozuna@lemmy.world 93 points 1 month ago

Turns out rocks are rocks. (I'm a geologist I an I approve of this message)

[-] hakunawazo@lemmy.world 19 points 1 month ago* (last edited 1 month ago)

Interesting that Dean Norris was on Mars and has a special interest in ~~rocks~~ minerals.

[-] robdor@lemmynsfw.com 3 points 1 month ago

Hey you show some got dang respect. He knew it was an ugly planet, a bug planet, and he did something about it. No more bugs on Mars. You're welcome.

[-] leftzero@lemmynsfw.com 13 points 1 month ago

Those particular rocks seem to be sandstone, though... which would pretty much be proof of liquid water having existed at some point.

Rocks are rocks, sure... but rocks tell stories, and these ones are telling a story that, while common and somewhat uninteresting on Earth, is quite interesting indeed when told on Mars.

[-] Yokozuna@lemmy.world 5 points 1 month ago* (last edited 1 month ago)

You are totally right. I was going to make a big post about how they actually formed but I deleted it halfway through. These rocks are definitely significant in that the same processes on earth happen on Mars so we can infer how they were deposited and formed. Hence my shitty first comment, rocks are rocks.