>[!abstract] >The Hessdalen lights are an unidentified aerial phenomenon (UAP) that's been recurring in one Norwegian valley for over a century. They consist of glowing or flashing orbs that hover in place or drift across the sky. They have been consistently captured on camera and radar, and documented as part of an ongoing research project with a permanent [monitoring station](https://docs.google.com/presentation/d/e/2PACX-1vTGxAZ_QPDD5jd_Lw_zlU5KHY_t5TuVXKTAhhfdKOHvm2XqGgZYAZP7mHAAz0m7l8d5itbjGJ0bMAo2/pub?start=true&loop=true&delayms=10000&slide=id.p). Tentative explanations include [ionized dust from mining](https://web.archive.org/web/20140830153112/http://www.itacomm.net/ph/2007_hauge.pdf) , [atmospheric ionization from radon decay](https://www.sciencedirect.com/science/article/abs/pii/S136468261000218X?via%3Dihub) , [electromagnetic disturbance from geomagnetic storms](https://link.springer.com/article/10.1007/s00703-021-00819-9), and, of course, UFOs. >[!related] >- **North** (upstream): — >- **West** (similar): — >- **East** (different): — >- **South** (downstream): —