
I’m checking NASA’s Phoenix Mars Lander website daily to get updates on the mission and new photos to look at. I find it really fascinating and quite a technological feat to shoot a complicated machine into space, have it travel millions of kilometers over periods of months or years and then land it on another planet. And it still works after everything it went through (well, sort of, there are already some minor problems.) Anyway, I was getting some of the latest photos from the site. The stereoscopic camera on Phoenix only shoots black and white photos, but there is an array of red, green and blue LEDs near the camera. This allows to shoot the scene three times, with different lighting and thus later on compose a colour picture. I tried this myself today with one of the pictures, but it’s of course only a very rough approximation, and nowhere a scientific process. It’s especially difficult since the photos aren’t labeled, so you don’t know with what colour light they were illuminated. I tried some reasoning, since the primary colour on Mars is red, the brightest photo of the series should be the red channel from my naive understanding and so on. The result is what you can see above.
This got me thinking about my favourite space pictures, so here’s a little rundown of some of them, in no particular order. Click on the images to view high-resolution versions.
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