This video includes many of my favorite NASA UFO encounters/sightings that I have archived over the years. All of these examples (with the exception of the second-to-last one) were captured on film by NASA astronauts or Russian Cosmonauts over the past half-century – showing many amazing examples from different eras – Gemini, Apollo, Apollo/Soyuz Test Project, Skylab, STS, the ISS, plus a couple Russian-source additions from their unmanned Zond and Mir Space Station programs as well thrown in to round things out.
The second last example is the only one in the compilation that features footage that was not taken in space and is not official-source (NASA or Soviet/Russian Space Agency). That clip shows an LTP (Lunar Transient Phenomenon) event captured through a camera connected to the eyepiece of a terrestrial-based telescope that luckily was being focused on the Moon at the time. In this case, the LTP manifests as an object transiting across the face of the lunar disc. Many thanks to amateur astronomer Alberto Mayer of Italy for doing a wonderful job of filming this stunning event (and for stacking the footage for us all to see).