Hessdalen Lights: A phenomenon known about and researched since the 30s User tendorphin, in the Unidentified and the Unexplained subreddit, 25 Aug 2020
"To Investigate or Not to Investigate? Researchers' Views on Unexplored Atmospheric Light Phenomena" Caron User dutereparted, in the Unidentified Anomalous Phenomena / Unidentified Aerial Phenomena subreddit, 08 Mar 2017
To Investigate or Not to Investigate? Researchers' Views on Unexplored Atmospheric Light Phenomena User h3nk1, in the Unidentified Anomalous Phenomena / Unidentified Aerial Phenomena subreddit, 07 Apr 2016