Jet contrail shadows may appear to be cast by a low-altitude bright light shining upwards. In fact, this shadow is normally cast on clouds below the jet and its contrail. Source: https://earthsky.org/todays-image/jet-contrail-casts-a-shadow…
Tag: contrail
Is that a UFO?! There’s probably an explanation
Most Unidentified Flying Objects aren’t actually unidentified. Here’s a list of phenomena, either natural or human-made, that people often mistake for UFOs. Source: https://earthsky.org/space/if-its-not-a-ufo-what-is-it…