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originally posted by: Ectoplasm8
Thankfully we have members that don't fly off the handle and suggest alien spacecraft without doing a little research. "deny ignorance" seems to be turning into embrace it.
This particular shot is from 2012:
This photo has been explained by NASA scientists in the past
In this optical effect, incoming light reflects back and forth off lenses and mirrors inside the telescope; the shape of artifacts produced by this scattered light — usually triangles and circles of various sizes — depends on the relative orientations of those lenses and mirrors.
Apparently it happens frequently.