The Missing Apollo 11 Telemetry Tapes

NASA lost the telemetry tapes containing the recording of the raw video data transmitted by the Apollo 11 mission. However, all the data was also safely recorded elsewhere.

Flat-Earthers make a big deal out of this incident to discredit the Apollo mission. In reality:

  1. The only lost data was the raw video before the conversion to NTSC for TV broadcasting.
  2. Only the raw data was lost, but there are other recordings of the same footage.
  3. Apollo missions other than Apollo 11 were not affected.
  4. There is no lost video that has never been seen.
  5. NASA discovered high-quality recordings of the same video.

Continue reading “The Missing Apollo 11 Telemetry Tapes”

Interlaced Video and Deinterlacing

Featured Video Play Icon

Interlaced video is a technique for doubling the perceived frame rate of a video display without consuming extra bandwidth, especially with older display technology. With an interlaced video, a video frame is rendered twice, one after another, first for the odd-numbered lines and then for the even-numbered lines.

Flat-Earthers discovered objects appearing transparent in some footage from the ISS and use the fact as “evidence” the footage was faked. In reality, some of these artifacts are due to interlacing and the process of deinterlacing interlaced videos.

Continue reading “Interlaced Video and Deinterlacing”