That Friday night I began the evening at Old Faithful Geyser. The aurora started to be visible around 10 p.m., with white lines or columns shooting high in the night sky. Green and purple colors began to show a few minutes before the 10:15 eruption. Soon after, the whole northern sky, from west to east, exploded with color. I was hoping it would last another hour and a half, until the next eruption. Instead, it lasted five hours. During the eruption, as the moon set over the western mountains, colored columns glowed brightly next to the geyser.