Yosemite's vast acreage and remote location protect some of the darkest night skies in the country. Astronomers, photographers, and city dwellers flock to the park to take advantage of this unique opportunity to view planets, stars, and galaxies.

Yosemite National Park: From the Milky Way to the moon, the beauty of Yosemite is on display 24 hours per day. During the full moon of the spring and early summer, lunar rainbows, also known as moonbows, can be seen on many park waterfalls.

Grand Canyon NP: What is the Grand Canyon Star Party and when is it being held? Tune in to find out.