Soviet Phobos 2 probe lost at Mars

When

Contact with the Soviet Phobos 2 probe could not be restored on March 27, 1989, ending its mission at Mars; NASA's records attribute the loss to an on-board computer malfunction. An elongated shape in one of its last images was later promoted by some as a UFO.

Sources

  1. OfficialPhobos Project Information (opens in a new tab)NASA Space Science Data Coordinated Archive
  2. OtherThe Phobos 2 mystery object (opens in a new tab)Patrick Gross, UFOs at close sight

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