Some of the plumbing for the on display as a giant lawn ornament at Johnson Space Center. The engine produces as much as 230,000 pounds of thrust and burns liquid oxygen and liquid hydrogen -- the first liquid hydrogen engine used on a manned space mission. Five of these engines powered the second stage of the Saturn V rocket (used to send men to the moon), while a single J-2 powered the third stage. It was the third stage that actually put the astronauts on a lunar trajectory.
Submitted for last week's topic, Plastic, because it was taken with a plastic camera. ;)
This is a genuine Holga shot, as opposed to my past "Holga-izing." The negatives were developed and scanned for me at the store. I upped the contrast a bit and cropped it slightly, but other than that, it's exactly as taken. I'm finding that my Holga is actually pretty "good" -- it doesn't have as much vignetting or blurring as others I've seen.