this post was submitted on 04 Sep 2026
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Science Memes

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[–] 2hundredpancakes@lemmy.blahaj.zone 17 points 4 days ago* (last edited 4 days ago) (2 children)

Fun fact, that big gash is called Valles Marineris and it's the deepest canyon in the solar system.

There's probably nothing scary in there...

Edit: largest not deepest, this is what I get for staying up too late

[–] frank@sopuli.xyz 5 points 4 days ago (2 children)

It's definitely the largest canyon, if I'm reading Wiki right. It's over 4km long and 200 wide, compared to the Grand Canyon at 277km long and 29 wide

[–] el_abuelo@programming.dev 3 points 2 days ago

Wait a second....how do yoh decide it's 4 long and 200 wide instead of 200 long and 4 wide?

You're right thanks! Late night brain moment

[–] PlaneMaker@feddit.org 5 points 4 days ago (2 children)

The Mariana Trench seems to be deeper, 11000 m compared to 7000 m. But I’m not sure what’s the reference point on Mars for elevation. But at least can’t fall into the Mariana Trench

[–] 14th_cylon@lemmy.zip 4 points 4 days ago (1 children)

But at least can’t fall into the Mariana Trench

why not? is there some local anomaly that causes gravity not to work?

[–] PlaneMaker@feddit.org 5 points 4 days ago (1 children)

I wouldn’t consider this as falling, but i get your point, i don’t see why sinking shouldn’t also be falling

I should have specified: at least you won’t die from the impact

[–] Vespair@lemmy.zip 2 points 3 days ago

Air is not so different from water in the grand scheme of things, we're just designed for and acclimated to air rather than water. So yeah, I think sinking is at best a subgenre of falling.

You're right, thanks for the correction