I am just fascinated by the Northern Lights. I would love to see them some day. We came close recently in the Upper Peninsula of Michigan, but we were a few days late and fifty miles away from a dark enough area.
There are so many authentic projects I can think of about the Northern Lights. As an adult learner, I need to do a lot more research about what causes them and where is the best place to see them.
For older students I can imagine authentic projects about the atmosphere, geography, solar phenomenon, magnetic fields, latitude, longitude… and unlimited art projects involving color.
For younger students I can imagine all of the above on a simpler level, depending on the age group and abilities being worked with.
BTW, the above photo was taken by a friend of mine in northern Wisconsin. I am so jealous!