10 What are stars? (www.youtube.com) posted 1 year ago by DefaultMode 1 year ago by DefaultMode +11 / -1 46 comments share 46 comments share save hide report block hide replies
sailboats dont go over the horizon, they are optically occulted by it through angular size change and the optical rising plane required to allow you to perceive depth in the first place comes to an end https://youtu.be/Wn0N5AJ8LUo