The girls earned their Night Explorer Jr. Ranger badges while we were at JTNP. It was interesting to learn that Joshua Tree was recently designated as a Dark Sky Park by the International Dark-Sky Association. They learned about astronomy, the effects of light pollution, and we even tried our hand in some astrophotography.

https://www.nps.gov/subjects/nightskies/juniorrangernight.htm

http://www.darksky.org/idsp/parks/joshuatree