If you live at high northern latitudes, you may see some eerie clouds at this time of year. They show up in deep twilight, and shine electric blue. Known as noctilucent clouds, they are formed by particles of meteor dust high in the atmosphere.
If you live at high northern latitudes, you may see some eerie clouds at this time of year. They show up in deep twilight, and shine electric blue. Known as noctilucent clouds, they are formed by particles of meteor dust high in the atmosphere.