sentences:  The first video recording of a TLE was captured accidentally on July 6, 1989 when researcher R.C Franz left a camera running overnight to view the night sky.When reviewing the video taken, two finger-like vertical images appeared in two frames of the film.The next known video recordings of a TLE were taken in 1989, when the Shuttle Mission STS-34 was conducting the Mesoscale Lightning Observation Experiment.