9. Earthquake Lights
For years, many people dismissed earthquake lights as a fabrication without any real evidence to back them up. Who really believed that near tectonic activity that the clouds and sky changed colors? It wasn't until photographic evidence began to pile up in the 60s that the larger scientific community accepted this was happening, and started trying to figure out why that was. They can appear before, during, or after earthquakes, and look something like the northern lights. They can last up to several minutes. The funny thing is, we still don't know why in the world they happen. Some think it's an electric phenomenon from quartz grinding against itself underground, or a local disruption to the ionosphere â€” but it's bizarre either way.