3 ms·
There's an especially interesting picture in the article: https://static01.nyt.com/newsgraphics/2016/10/16/exomars-landing/5b10909857e42b1a309ae39f2ddc8c3f9896
by lutusp 10y ago
There's an especially interesting picture in the article:
https://static01.nyt.com/newsgraphics/2016/10/16/exomars-landing/5b10909857e42b1a309ae39f2ddc8c3f989676d8/PIA08813-victoria.jpg https://static01.nyt.com/newsgraphics/2016/10/16/exomars-lan...
Obviously anything about Mars is interesting, but this picture has a peculiar property. Look at the picture and imagine that the light is coming from the upper right -- when you do that, the crater becomes a dome. If instead you imagine that the light is coming from the lower left, it becomes a crater again.
I've seen this in other ambiguous terrain photographs, but this picture easily supports the ambiguity.
- TheSpiceIsLife 10y agoI don't see what's peculiar about that. I've experienced this phenomenon with objects right in front of me when I wasn't sure what I was looking at. One time while riding a motorbike on a wet sand dune a colour gradient appear to be a slight decline, but it was actually a sharp incline, resulting in a rather sudden change of velocity and me headbutting the handlebars. There are countless other illusions we could talk about too, none of which seem all that peculiar to me, even if they were to be observed on another plant.
- jacquesm 10y agohttps://en.wikipedia.org/wiki/Hollow-Face_illusion https://en.wikipedia.org/wiki/Hollow-Face_illusion
- stable-point 10y agoI can't get it to look like a crater, no matter where I pretend the light's coming from. It's always a dome for me.
- DiThi 10y agoTry flipping the image. Or turning off the light: if you have actual light coming from above you can't imagine it is coming from below.