In 1984, a group of six NASA space explorers reported to have seen some “celestial beings” in space. They told ground control that these were humanoid in appearance, but also had wings and halos. The faces of these beings were said to resemble those of humans with "peaceful expressions".
Some of the space explorers concluded that these alleged space angels had access to technology that was more advanced than our own. Many scientists have dismissed the incident citing the fatigue of the cosmonauts due to their extended stay in space. However, since NASA has decided to stay quiet on this matter, it therefore has become a sort of mystery.
Cosmonauts aren’t the only ones to have supposedly glimpsed angels in space. In 1995, the Solar And Heliospheric Observatory allegedly glimpsed the images of angelic beings flying near the Sun. NASA explained that these images were merely image-processing errors, but conspiracy theorists insist that those were aliens.