The Big Think

September 19, 2014

Haters Beware

Filed under: Computing,Science,Space,Technology — jasony @ 9:17 am

NVIDIA’s new GPU proves moon landing truthers wrong:

“‘It turns out there is a lot of information about the astronomical bodies floating out there in space,’ he explains. ‘Starting with the sun. The sun itself is 128,500 lux — that’s lumens per square meter – but it turns out the moon is a crappy reflector of light.’ Daly discovered that the moon is only 12-percent reflective, and absorbs most of the sunlight hitting it. On the other hand, 12-percent of 128,500 lux is quite a lot. ‘It’s the equivalent to ten 100-watt lightbulbs per square meter of light bouncing off the moon.’ More than enough make Aldrin visible under the lander’s shadow.

While this exercise showed that the moon was reflective enough to highlight Aldrin, something was still wrong. Daly noticed that the astronaut’s side wasn’t lit the same in NVIDIA’s simulation as it was in NASA’s photograph, but he wasn’t sure why. ‘A couple of people really into the moon landing told me, ‘by the way, you should take into account Neil Armstrong and the light coming off of him.’ At first I was like, yeah, whatever — the sun is doing all the work — something the size of a guy in a space suit isn’t going to contribute much light.’ He quickly learned his assumption was wrong: the material on the outside of the astronaut’s suits is 85-percent reflective. ‘Sure enough, we put him in there, adjusted the reflectivity of his suit, put him in the position where the camera would be… and it contributed another 10% or so of light to the side of Buzz Aldrin.'”

Pretty neat pics at the link

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