South Korean Lucas Kim flew on a JeJu Air plane from Seoul to Thailand. At some point, the man looked out the window and noticed a yellowish object flying near the plane.
The object pulsed with a yellowish-greenish light and Kim, who was apparently watching too much TV, decided that it might be "some crazy Russian reconnaissance plane."
However, when Kim looked closely, he realized that this is not one object, but six spherical objects at once, holding together. And soon they began to split into pairs of two, and then flew away altogether, gaining speed.
Critics suggest that most likely all this is just a reflection of sunlight on the glass, that is, glare from something shiny in the cabin of the plane, maybe from glasses from the flight attendant's table.
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