National parks offer astronomy programs this summer

June 27, 2015 10:00 AM

UPDATED June 26, 2015 10:00 PM

More Videos

  • What you need to know about August's solar eclipse

    The U.S. is in for a rare astronomical treat on August 21, 2017 — that's the day of the "Great American Eclipse." It's the first total solar eclipse to cross the entire U.S. in 99 years, and more than 12 million Americans live in its path.