Night shots reveal many UFOs, as they move about & past the shuttle Discovery. The full sequence, unedited, from Martyn Stubbs NASA UFO Archive.
At the near bottom right the UFO slowly moves left & is visible right to the end at left top. From Martyn Stubbs NASA UFO Archives.
The "classic" 1991, STS-48 mission, shows us one more UFO...in this old, rough clip. From The Martyn Stubbs NASA Archive.
The special all spectrum camera (TOP) shows 1 solo UFO,and they follow it as it flies out to space!
From Martyn Stubbs NASA UFO Archive