References
Anders, Anders. “Shapes and Types of Aurora.” Aurora Borealis Observatory, 13 July 2019,
auroraborealisobservatory.com/news/shapes-and-types-of-aurora/.
“Aurora Forecast.” Geophysical Institute, www.gi.alaska.edu/monitors/aurora-forecast.
“Aurora.” 2003. PDF file. (NASAs)
“What Causes the Auroras?” Aurorasaurus, aurorasaurus.org/learn_more#aurora-colors.
Personal knowledge and personal photos.
auroraborealisobservatory.com/news/shapes-and-types-of-aurora/.
“Aurora Forecast.” Geophysical Institute, www.gi.alaska.edu/monitors/aurora-forecast.
“Aurora.” 2003. PDF file. (NASAs)
“What Causes the Auroras?” Aurorasaurus, aurorasaurus.org/learn_more#aurora-colors.
Personal knowledge and personal photos.