Give me strength. Image deletionists are systematically going through and deleting each and every image produced by NASA, simply because it contains a symbol that says it's written by NASA. Apparently they think that they might let me keep some NASA images if I more or less pretend it was written by somebody who added it to the wikipedia by actually removing the insignias.
Um. What?
So far as I can tell NASA have got a specific law that says you can't fraudulently stick their (public domain!) insignia on something to make it look like it was written by them when it wasn't, but other than that, they very, very, very probably want you to say where you got an image from, and the images/insignias/documents are not covered by copyright unless they weren't done by NASA but one of their contractors. In other words, you might be breaking the law by removing it.
The wikipedia image guys really just absolutely have no idea what they're doing, they have completely lost the plot.